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ABSTRACT Purpose: To assess the effect of the coronavirus disease 2019 (COVID-19) pandemic on cataract surgery by residents who had mandatory surgical simulator training during residency. Methods: In this retrospective, observational analytical study, the total number of cataract surgeries and surgical complications by all senior residents of 2019 (2019 class; prepandemic) and 2020 (2020 class; affected by the reduced number of elective surgeries due to the COVID-19 pandemic) were collected and compared. All residents had routine mandatory cataract surgery training on a virtual surgical simulator during residency. The total score obtained by these residents on cataract challenges of the surgical simulator was also evaluated. Results: The 2020 and 2019 classes performed 1275 and 2561 cataract surgeries, respectively. This revealed a reduction of 50.2% in the total number of procedures performed by the 2020 class because of the pandemic. The incidence of surgical complications was not statistically different between the two groups (4.2% in the 2019 class and 4.9% in the 2020 class; p=0.314). Both groups also did not differ in their mean scores on the simulator's cataract challenges (p<0.696). Conclusion: Despite the reduction of 50.2% in the total number of cataract surgeries performed by senior residents of 2020 during the COVID-19 pandemic, the incidence of surgical complications did not increase. This suggests that surgical simulator training during residency mitigated the negative effects of the reduced surgical volume during the pandemic.
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ABSTRACT Purpose: To present long-term results of pars plana vitrectomy combined with pan-retinal endolaser photocoagulation, Ahmed glaucoma valve implantation, and/or phacoemulsification in patients with complicated neovascular glaucoma. Methods: The study comprised 15 eyes from 15 patients with neovascular glaucoma as a complication of diabetic retinopathy and owing to ischemic central retinal vein occlusion. There was a vitreous hemorrhage n all of the patients. Furthermore, 8 of the cases showed varying degrees of hyphema. All subjects received an intravitreal injection of bevacizumab three days before surgery. In 12 phakic patients, phacoemulsification, pars plana vitrectomy, and Ahmed glaucoma valve implantation were performed. Pars plana vitrectomy and Ahmed glaucoma valve implantation were performed in 3 pseudophakic patients. Perioperative and postoperative complications, intraocular pressure values, and best-corrected visual acuity scores were also recorded. Results: The mean follow-up was 24.4 ± 14.56 months. The mean preoperative intraocular pressure was 50.06 ± 7.6 mmHg. At 1 day, 7 days, and 1-, 3-, 6-, 12-month, and last visit following surgery, the mean intraocular pressure was 11.06 ± 8.22, 12.66 ± 7.27, 13.8 ± 7.73, 18.64 ± 7.05, 19.28 ± 4.61, 16.28 ± 1.68, and 16.92 ± 2.12 mmHg, respectively (p=0.001 for every follow-up visit). The mean visual acuity on the most recent appointment was 1.18 ± 0.42 logMar (p=0.001 for each subsequent visit). As postoperative early complications, varying degrees of hyphema and fibrin reactions were recorded. During follow-up, one patient developed phthisis bulbi. In 4 cases, Ahmed glaucoma valve revision surgery was required. Conclusions: In patients with complicated neovascular glaucoma, combined surgical procedures are safe, effective, and preferable both in terms of controlling high intraocular pressure and providing reasonable visual abilities.
RESUMO Objetivo: Apresentar nossos resultados de longo período de vitrectomia pars plana combinada com fotocoagulação panretiniana com endolaser, implantação da válvula Ahmed para glaucoma e/ou facoemulsificação em pacientes com glaucoma neovascular complicado. Métodos: Foram incluídos no estudo 15 olhos de 15 pacientes com glaucoma neovascular como complicação da retinopatia diabética e devido à oclusão isquêmica da veia central da retina. Todos os casos tiveram hemorragia vítrea. Além disso, 8 dos casos apresentaram diferentes graus de hifema. A injeção intravítrea de bevacizumabe foi administrada em todos os casos 3 dias antes da cirurgia. Facoemulsificação, vitrectomia pars plana e implantação da válvula Ahmed para glaucoma foram realizadas em 12 pacientes fáquicos. A vitrectomia pars plana e a implantação da válvula Ahmed para glaucoma foram realizadas em 3 pacientes pseudofáquicos. Complicações perioperatórias e pós-operatórias, valores de pressão intraocular e valores de melhor acuidade visual corrigida pré-operatório e pós-operatório foram registrados. Resultados: O acompanhamento médio foi de 24,4 ± 14,56 meses. A média da pressão intraocular pré-operatória foi de 50,06 ± 7,6 mmHg. Em 1 dia, 7 dias e 1,3,6,12 meses, e última visita após cirurgia, a média da pressão intraocular foi de 11,06 ± 8,22, 12,66 ± 7,27, 13,8 ± 7,73, 18,64 ± 7,05, 19,28 ± 4,61, 16,28 ± 1,68 e 16,92 ± 2,12 mmHg, respectivamente (p=0,001 para cada visita de acompanhamento). A média da acuidade visual na última visita foi de 1,18 ± 0,42 logMar (p=0,001 para cada visita de acompanhamento). Vários graus de reações de hifema e fibrina foram registrados como complicações precoces pós-operatórias. Phthisis bulbi foi desenvolvido em um caso durante o acompanhamento. A cirurgia de revisão da válvula Ahmed para glaucoma foi necessária em 4 casos. Conclusões: Os procedimentos cirúrgicos combinados que realizamos são seguros, eficazes e preferenciais, tanto em termos de controle da alta pressão intraocular quanto fornecimento de habilidades visuais razoáveis em pacientes com glaucoma neovascular complicado.
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ABSTRACT A 59-year-old man presented with a unilateral blurring of vision in his left eye. His left eye's visual acuity was hand movements level. He underwent phacoemulsification surgery, and an intrastromal posterior chamber intraocular lens was implanted. The intrastromal intraocular lens was extracted and a new intraocular lens was implanted. Usinge the Snellen chart, the final best-corrected visual acuity was 20/40. With this case report, we wish to emphasize that a single stepwise clear corneal incision merged with wound-assisted intraocular lens injections can result in intraocular lens misdirection into the corneal stroma. As a result, while performing a misdirected intraocular lens removal, we recommend that the wound be carefully constructed.
RESUMO Um homem de 59 anos apresentou embaçamento visual unilateral no olho esquerdo. Sua acuidade visual nesse olho era no nível de movimentos da mão. O paciente havia se submetido a uma cirurgia de facoemulsificação em que foi feita a implantação intraestromal de uma lente intraocular de câmara posterior. Foi feita a extração dessa lente intraestromal intraocular e uma nova lente intraocular foi implantada. A melhor acuidade visual corrigida final foi de 20/40 pela tabela de Snellen. Com este relato de caso, os autores desejam apontar que uma incisão de degrau único em córnea clara, quando combinada com a injeção de uma lente ocular através da incisão, pode levar a um direcionamento incorreto da lente intraocular para dentro do estroma corneano. Portanto, recomenda-se uma construção cuidadosa da incisão ao se remover uma lente intraocular direcionada incorretamente.
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AIM:To investigate the changes of retinal microcirculation after phacoemulsification and the influencing factors of visual acuity.METHODS: Retrospective analysis. A total of 264 cataract patients(264 eyes)who underwent phacoemulsification in our hospital from January 2022 to December 2022 were selected as the study objects. Patients were divided into &#x003C; 0.3 group(66 eyes)and ≥0.3 group(198 eyes)according to the recovery of best corrected visual acuity(BCVA)at 3 mo after surgery. The changes of retinal microcirculation indexes were compared before and after treatment. Logistic regression and LASSO regression models were used to screen the influencing factors of postoperative BCVA. A nomogram prediction model of postoperative BCVA was constructed and verified. A restricted cubic spline Logistic regression model was established to analyze the dose-response relationship between end-diastolic velocity(EDV), peak systolic velocity(PSV)and the risk of BCVA recovery.RESULTS: At 3 mo postoperatively, EDV and PSV were significantly improved compared with those before treatment, and resistance index(RI)levels were significantly lower than those before treatment(all P&#x003C;0.05). Preoperative EDV, PSV, aqueous humor cell grade, fundus lesion grade, advanced age and Emery grade were influencing factors for poor BCVA recovery after phacoemulsification in cataract patients(P&#x003C;0.05). The AUC before and after validation of the nomogram model by Bootstrap method were 0.869(95%CI: 0.815-0.903)and 0.866(95%CI: 0.802-0.895), respectively. The sensitivity was 88.36% and 88.27%, and the specificity was 91.82% and 91.78%, respectively. Restricted cubic spline model analysis showed no nonlinear dose-response relationship between EDV and PSV levels and the risk of poor BCVA recovery in either male or female(P&#x003E;0.05).CONCLUSION: After phacoemulsification, retinal microcirculation in cataract patients improved significantly. EDV, PSV, aqueous humor cell grade, fundus lesion grade, advanced age and Emery grade are all factors influencing poor BCVA recovery after cataract surgery.
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AIM: To evaluate the efficacy of 0.01% hypochlorous acid as a conjunctival sac disinfectant before cataract phacoemulsification and its impact on the ocular surface.METHODS: Randomized controlled clinical trial. A total of 285 patients who were scheduled for cataract phacoemulsification surgery were randomly divided into the hypochlorous acid group and the povidone iodine group. Before and after disinfection, conjunctival sac swabs were taken, and bacterial culture and colony-forming units(CFUs)testing were performed using blood agar and chocolate agar media, respectively. All patients were evaluated for ocular symptom scores and pain severity scores 2 h, 1 d, and 1 wk after disinfection, and underwent corneal fluorescein staining, eye redness index, tear meniscus height, and noninvasive breakup time(NIBUT)examination. The incidence of endophthalmitis after surgery was recorded.RESULTS: Conjunctival sac disinfection with 0.01% hypochlorous acid significantly reduced the rate of positive bacterial cultures and colony-forming ability of the conjunctival sac, with statistically significant differences compared with the pre-disinfection period(both P&#x003C;0.01), and the disinfecting ability of hypochlorous acid was comparable to that of povidone-iodine(χ2=0.811, P=0.368). The scores of ocular symptoms and pain severity in the hypochlorous acid group were significantly lower than those in the povidone-iodine group(both P&#x003C;0.01). The corneal fluorescein staining and eye redness index in the hypochlorous acid group were significantly lower than those in the povidone-iodine group(all P&#x003C;0.01). No endophthalmitis occurred in either group of patients. CONCLUSION: As a conjunctival sac disinfectant, 0.01% hypochlorous acid is safe and effective, with minimal discomfort and damage to the ocular surface in patients.
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A well-centered, adequately sized continuous curvilinear capsulorhexis (CCC) is a prerequisite for successful cataract surgery. A perfect capsulorhexis ensures safe and effective performance of various steps of surgery as well as a correctly positioned intraocular lens (IOL) with optimal rotational stability. Ganesh and Grewal (GG) cystitome maker is a step toward standardizing the creation of a cystitome to reduce variations and complications associated with the crucial step of CCC in cataract surgery. We conducted a study to measure the repeatability and precision of cystitomes made by the GG cystitome maker versus those made manually with a needle holder. The results showed that the cystitomes made with GG cystitome maker had a lesser degree of variation. This indicates a more repeatable cystitome, which will inadvertently help in reducing the error caused by the instrument in making a good CCC during cataract surgery.
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Objetivo: Determinar la pérdida celular endotelial corneal posterior a la cirugía de catarata por técnica de facoemulsificación. Métodos: Se realizó un estudio descriptivo de intervención prospectivo y longitudinal. Se estudiaron 51 ojos operados de catarata por la técnica de facochop. Se les realizó microscopia endotelial pre- y posoperatoria a los tres y seis meses de la intervención. También se estudiaron los parámetros facodinámicos. Resultados: La edad promedio fue de 66,7 ± 11,7 años, predominó el sexo femenino (53,7 %). Se observó una disminución significativa de los valores promedios de densidad celular y hexagonalidad a los tres y seis meses posteriores a la operación de catarata. El porcentaje de pérdida de células endoteliales posterior a la intervención fue de 19,6 ± 0,8 %. El tiempo total de ultrasonido medio fue de 11,8 ± 4,5 seg mientras el tiempo efectivo de facoemulsificación tuvo una media de 0,008 ± 0,001 seg. Conclusiones: El recuento de células endoteliales corneales muestra una disminución significativa de los valores promedios de densidad celular y hexagonalidad a los tres y seis meses posteriores a la operación de catarata, el porcentaje de pérdida de células endoteliales corneales a los seis meses posterior está dentro de los límites normales y se observa relación de dependencia entre el tiempo efectivo de facoemulsificación y el porcentaje de pérdida de células endoteliales.
Objective: To determine the loss of corneal endothelial cell after cataract surgery by the phacoemulsification technique. Methods: A prospective, longitudinal, descriptive and interventional study was conducted. Fifty-one eyes operated on for cataract by the phacoemulsification technique were studied. Preoperative, as well as postoperative endothelial microscopy at three and six months after the cataract surgery, was performed. Phacodynamic parameters were also studied. Results: The mean age was 66.7 ± 11.7 years and there was a predominance of the female sex (53.7%). A significant decrease in the mean values of cell density and hexagonality was observed at three and six months after the cataract surgery. The percentage of endothelial cell loss after surgery was 19.6% ± 0.8%. The mean total ultrasound time was 11.8 ± 4.5 secs, while the effective phacoemulsification time had a mean of 0.008 ± 0.001 secs. Conclusions: The count of corneal endothelial cell shows a significant decrease in the mean values of cell density and hexagonality at three and six months after the cataract surgery; the percentage of corneal endothelial cell loss at six months is within normal limits; and a dependent relationship is observed between the effective phacoemulsification time and the percentage of endothelial cell loss.
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Purpose: To compare the visual outcomes and residual astigmatism following implantation of Eyecryl toric versus Alcon AcrySof IQ toric intra?ocular lenses (IOLs). Methods: This retrospective, observational study included 143 eyes of 141 patients who underwent phaco?emulsification, followed by implantation of Eyecryl toric IOL (n = 83 eyes) or Alcon toric IOL (n = 60 eyes) in an eye hospital in South India from 2018 to 2021. At 1 month post?op, the uncorrected distance visual acuity (UCVA), best corrected distance visual acuity (BCVA), and residual astigmatism of the toric IOL were compared and analyzed. Results: The mean pre?op corneal astigmatism was 2.02 ± 0.81 D and 1.70 ± 0.68 D in the Alcon and Eyecryl groups, respectively (P = 0.005). The mean post?op corneal astigmatism at 1 month was 0.50 ± 0.51 D and 0.36 ± 0.42 D in the Alcon and Eyecryl groups, respectively, with no statistically significant difference between them (P = 0.87). The mean post?op UCVA in logarithm of minimum angle of resolution (logMAR) at 1 month was similar between the groups at 0.17 ± 0.18 and 0.17 ± 0.16 in the Alcon and Eyecryl groups, respectively (P = 0.98). The mean post?op BCVA in logMAR at 1 month was 0.06 ± 0.09 and 0.03 ± 0.10 in the Alcon and Eyecryl groups, respectively (P = 0.02). Conclusion: Both Eyecryl toric and Alcon AcrySof IQ toric IOLs showed comparable post?operative outcomes in terms of UCVA and residual astigmatism. The post?op BCVA was clinically similar between groups but statistically better in the Eyecryl toric group
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Purpose: To evaluate the clinical outcomes of preloaded toric intraocular lens (IOLs) implantation in eyes undergoing phacoemulsification. Methods: This prospective study included 51 eyes of 51 patients with visually significant cataracts and corneal astigmatism ranging between 0.75 and 5.50 D. All patients underwent phacoemulsification with SupraPhob toric intraocular lens implantation under topical anesthesia. The main outcome measures were uncorrected distance visual acuity (UDVA), residual refractive cylinder, spherical equivalent, and IOL stability at 3 months follow?up. Results: At 3 months, 49% (25/51) of patients had UDVA equal to or better than 20/25 with 100% of eyes achieving better than 20/40. Mean logMAR UDVA improved from 1.02 ± 0.39, preoperatively to 0.11 ± 0.10 at 3 months follow?up (P < 0.001, Wilcoxon signed?rank test). The mean refractive cylinder improved from ? 1.56 ± 1.25 D preoperatively to ? 0.12 ± 0.31 D at 3 months follow?up (P < 0.001) while the mean spherical equivalent value changed from ? 1.93 ± 3.71D preoperatively to ? 0.16 ± 0.27D (P = 0.0013). The mean root mean square value for higher order aberrations was 0.30 ± 0.18 ?m while the average contrast sensitivity value (Pelli?Robson chart) was 1.56 ± 0.10 log unit, at the final follow?up. The mean IOL rotation at 3 weeks was 1.7 ± 1.61 degrees, which did not change significantly at 3 months (P = 0.988) follow?up. There were no intraoperative or postoperative complications. Conclusion: SupraPhob toric IOL implantation is an effective method for addressing preexisting corneal astigmatism in eyes undergoing phacoemulsification with good rotational stability
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Insufficient pupillary dilatation is a significant challenge during cataract surgery, as it increases the risk of various intraoperative complications. Implantation of toric intraocular lenses (TIOL) is particularly difficult in eyes with small pupils, as the toric marks are provided in the periphery of the IOL optic, making the visualization of the same difficult for proper alignment. Attempts at visualizing these marks using a second instrument such as a dialler or iris retractor lead to additional manipulations in the anterior chamber resulting in increased chances of postoperative inflammation and intraocular pressure rise. A new intraocular lens (IOL) marker to guide the implantation of TIOLs in eyes with small pupils is described, which can potentially be beneficial in achieving accurate alignment of toric IOLs in small pupils, without the need for additional manipulations, thus improving safety, efficacy, and success rates of TIOL implantation in these eyes.
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Purpose: Foreign body sensation and irritation are common after cataract surgery, as is the exacerbation of dry eye disease if present. This study compared postoperative dry eye treatments and patient satisfaction. Methods: Age-related cataract patients undergoing phacoemulsification were recruited and were divided randomly into 4 postoperative treatment groups: Group A: Antibiotic + Steroids; Group B: Antibiotic + Steroids + Mydriatic; Group C: Antibiotic + Steroids + Mydriatic + Non-steroidal Ant- inflammatory drugs (NSAIDs); Group D: Antibiotic + Steroids + Mydriatic + NSAID + Tear substitute. Patients were assessed at 1, 3, and 5 weeks post-operatively for uncorrected distance and near vision, best corrected visual acuity (BCVA) for distance and near, Schirmer’s-1 test, and Tear Film Break-Up Time test. At each visit, patients were assessed for dry eye-related subjective parameters using Ocular Surface Disease Index questionnaire. Results: Study participants numbered 163. (87 male and 76 female patients). No statistically significant difference was present in visual acuity for near and distance. The mean values of Schirmer’s test and TFBUT were better in group D patients at each postoperative visit, with significant differences noted in comparison with other groups. The patient response to pain and dry eye symptoms was superior in groups C and D, with group D producing the best results. Compared to group A, patients in groups C and D were more satisfied with their vision and surgery. Conclusion: The addition of tear substitutes to steroids and NSAIDs has been associated with decreased dry eye-related symptoms and a better subjective feeling of vision, although no significant difference was noted in vision measured objectively
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Purpose: A prospective cohort study was conducted in a tertiary eye care centre to study the incidence of tear film dysfunction and its recovery in diabetics and non-diabetics after clear corneal phacoemulsification. Methods: A total of 50 diabetics and 50 non-diabetics underwent clear corneal phacoemuslfication. Schirmer’s I test (SIT), tear film break-up time (TBUT), corneal staining, tear meniscus height (TMH), and ocular surface disease index (OSDI) assessment were done preoperatively, postoperatively at 7 days, 1 month, and 3 months in both groups to assess tear film function. Results: Both groups showed decreased SIT and TBUT values on postoperative Day 7, after which they gradually improved. SIT and TBUT values in diabetics were significantly lower than that in non-diabetics postoperatively (P < 0.001). SIT in non- diabetics reached baseline levels at postoperative 3 months. OSDI scores reached peak levels in both groups on postoperative Day 7, but were higher in diabetics than non-diabetics (P < 0.001). OSDI scores gradually improved over 3 months but remained over baseline levels in both groups. Corneal staining was positive in 22% diabetics and 8% non-diabetics at postoperative Day 7. However, none of the patients had corneal staining at 3 months. Tear meniscus height (TMH) did not reveal any significant difference between the two groups at any time interval. Conclusion: We concluded that tear film dysfunction after clear corneal incision occurs in both groups, but is more severe and recovers more slowly in diabetics than non-diabetics.
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Objective: To evaluate the effect of uncomplicated cataract surgery on macular and optic nerve head blood flow with Optical Coherence Tomography Angiography (OCT-A). Retinal vascular changes and macular vessel remodeling following cataract surgery is an area of interest, as the effect, cause and duration of such changes remain debatable.Setting: Eye Department, Red Cross Tertiary General Hospital, Athens, Greece.Methods: In this study, we recruited cataract surgery candidates who had regular post operative visits and underwent longitudinal OCT-A examinations before and after surgery.Results: Macular vessel density increased in the post operative visits both in the superficial (SCP) and deep capillary network (DCP) (P<0.001) and showed a persistent effect over 3 months follow-up. Macular thickness increased over the first postoperative month, but returned to preoperative values at 3 months. Foveal avascular zone (FAZ) measurements and vessel density at radial peripapillary capillaries (RPC) were unaffected.Conclusions: OCT-A enables a quantitative analysis of blood flow by regular patient monitoring. In this study, we found that after cataract surgery, macular blood flow increased significantly. The reason for this could be attributed to post operative inflammatory process or vascular remodeling due to change in retinal metabolic demands.
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ABSTRACT Purpose: To evaluate the stability and efficacy of the double-flanged 5-0 polypropylene suture to fixate subluxated cataracts at 18 months and the possible complications of this new technique Methods: This technique uses a 5-0 polypropylene monofilament to create two flanges with a thermocautery, for fixation of a capsular tension segment to the sclera to fix the subluxated capsular bag. This technique was implemented in 17 eyes requiring intraocular lens implantation in a setting of zonular dialysis due to trauma, Marfan syndrome, microspherophakia, idiopathic disease, and post-phacoemulsification status. Results: Follow-up of the patients occurred at 18 months. Best-corrected visual acuity improved significantly from 0.85 to 0.39 (logMAR), whereas the spherical and cylindrical refractive errors and intraocular pressure remained stable from preoperation. No suture photodegradation or pseudophacodonesis were detected. Conclusion: The double-flanged 5-0 polypropylene suture transscleral bag fixation technique has shown favorable long-term outcomes in terms of bag intraocular lens/complex fixation and stability. In eyes with zonular weakness or dialysis, this technique appears to be a safe and knotless option for cataract surgery.
RESUMO Objetivo: Avaliar a estabilidade e eficácia da técnica double-flanged com sutura de 5-0 polipropileno para fixação de cataratas subluxadas aos 18 meses e as possíveis complicações desta nova técnica. Métodos: Esta técnica utiliza um monofilamento de polipropileno 5-0 para criar dois flanges com um termocautério para fixar um Segmento de Tensão Capsular na esclera a fim de estabilizar o saco capsular subluxado. Esta técnica foi implementada em 17 olhos que necessitavam do implante de lente intraocular em casos de diálise zonular devido a trauma, síndrome de Marfan, microesferofacia, subluxação idiopática ou pós-facoemulsificação que provocou subulxação do saco capsular intraoperatória. Resultados: O seguimento dos pacientes foi de 18 meses. A acuidade visual corrigida melhorou significativamente de 0,85 para 0,39 (logMAR), enquanto os erros de refração esféricos e cilíndricos e a pressão intraocular permaneceram estáveis. Nenhuma fotodegradação de sutura ou pseudofacodonese foi encontrada. Conclusão: A técnica double-flanged para fixação transescleral de saco capsular com sutura de 5-0 polipropileno mostrou resultados de estabilidade de longo prazo para o complexo lente/saco capsular. Então, aparenta ser uma opção segura para cirurgia de catarata, sem necessidade pontos, em olhos com fraqueza zonular ou diálise.
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Purpose: To study the complication rate following Nd: YAG posterior capsulotomy posterior capsular opacification (PCO) in patients with and without comorbid conditions. Methods: This was a prospective, interventional, comparative, and observational study. A total of 80 eyes, consisting of 40 eyes without ocular comorbidities (group A) and 40 eyes with ocular comorbidities (group B) that were being treated with Nd: YAG capsulotomy for PCO, were included. Visual outcome and complications of Nd: YAG capsulotomy were studied. Results: The mean age of group A patients was 61.65 ± 8.85 years and that of group B patients was 63 ± 10.46 years. Of the total, 38 (47.5%) were men and 42 (52.5%) were women. In group B, the ocular comorbidities were moderate nonproliferative diabetic retinopathy (NPDR) (n = 14 eyes; 14/40 = 35%), subluxated intraocular lens (IOL; <2 clock hours of subluxation; n = 6), age?related macular degeneration (ARMD; n = 6), post?uveitic eyes (having old signs of uveitis, no episode of uveitis since the last 1 year; n = 5), and operated cases of traumatic cataract (n = 4). The mean energy required in groups A and B was 46.95 ± 25.92 and 42.62 ± 21.85 mJ, respectively (P = 0.422). The average energy requirement in Grade 2, Grade 3, and Grade 4 PCO was 22.30, 41.62, and 79.52 mJ, respectively. An increase in intraocular pressure (IOP) of >5 mmHg from pre?YAG levels was observed in one patient in each group on day 1 postprocedure, for which medical treatment was given to both patients for 7 days. One patient in each group had IOL pitting. No patient had any other complications attributable to ND:YAG capsulotomy. Conclusion: Nd:YAG laser posterior capsulotomy is a safe procedure for PCO in patients with comorbidities. Visual outcomes were excellent after Nd:YAG posterior capsulotomy. Although a transient increase in IOP was noted, the response to treatment was good and a long?term increase in IOP was not observed
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Purpose: To investigate the prognostic factors for visual outcome in patients undergoing immediate pars plana vitrectomy (PPV) for posteriorly dislocated lens fragments during phacoemulsification surgery. Methods: This was a single?center, retrospective, cross?sectional study of 37 eyes of 37 patients undergoing immediate PPV for posteriorly dislocated lens fragments from 2015 to 2021. The primary outcome measure was changes in the best?corrected visual acuity (BCVA). Additionally, we analyzed the predictive factors for poor visual outcomes (BCVA <20/40) and perioperative complications. Results: The mean (±standard deviation [SD]) age of the patients was 66.57 (±10.86) years, with an almost identical gender profile (M: F = 18/19 [48.64%:51.36%]). The median (interquartile range [IQR]) log of minimum angle of resolution (logMAR) BCVA improved significantly from the baseline (1 [0.6–1.48], ~20/200) to the final visit (0.3 [0.2–0.6], ~20/40) (P < 0.0001) after a mean (±SD) follow?up of 6.35 (±6.32) months. The final BCVA was 20/40 or better in 59.5% of the eyes. Poor final BCVA (<20/40) was associated with small preoperative pupillary size (P = 0.02), presence of preoperative ocular pathology (P = 0.02) including uveitis, glaucoma, and clinically significant macular edema (CSME), intraoperative displacement of >50% of lens matter into the vitreous (P < 0.001), use of iris?claw lens (P < 0.001), and postoperative cystoid macular edema (CME; P = 0.007). The postoperative complications included CME (13.51%), retinal detachment (10.81%), chronic uveitis (8.11%), glaucoma (8.11%), iritis (2.7%), posterior chamber IOL (PCIOL) dislocation (2.7%), and vitreous hemorrhage (2.7%). Conclusion: For retained lens fragments in complicated phacoemulsification surgery, immediate PPV is a viable approach with the potential for a good visual outcome. The important predictors for poor visual outcomes include a small preoperative pupil size, preexisting ocular pathology, displacement of significant volume of lens matter (>50%), use of an iris?claw lens, and CME.
ABSTRACT
Objetivo: Evaluar la seguridad de facoemulsificación asociada a la trabeculectomía gonioasistida modificada con tijeras. Métodos: Estudio experimental de intervención en 103 ojos (103 pacientes) con glaucoma primario de ángulo abierto. Se realizó facoemulsificación y trabeculectomía gonioasistida modificada con tijeras (51 ojos, casos) y facoemulsificación- trabeculectomía estándar (52 ojos, controles). En los casos se requirió tijera y pinza vítreo-retinal y se resecó trabéculo por abordaje interno. Se evaluó la agudeza visual, el astigmatismo inducido, la pérdida de células endoteliales y la aparición de complicaciones quirúrgicas en ambos grupos a los tres meses de seguimiento posoperatorio. Resultados: La AVSC se incrementó en ambos grupos a los tres meses postoperatorios. Sin embargo, fue mayor para la FACO-TGAM (0,81 ± 0,16vs. 0,71 ± 0,16), con diferencias significativas (p= 0,002). El astigmatismo inducido fue significativamente mayor en el grupo control (0,53 ± 1,14Dvs.1,8 ± 1,20D (p< 0.001). Las complicaciones quirúrgicas posoperatorias fueron más frecuentes en el grupo control (57 por ciento vs. 73 por ciento p= 0,14). La pérdida de células endoteliales no mostró diferencias significativas (p= 0,82). Conclusiones: La recuperación visual y el menor número de complicaciones ubican la facoemulsificación y trabeculectomía gonioasistida modificada con tijeras como técnica de elección para el tratamiento de pacientes con catarata y el glaucoma primario de ángulo abierto(AU)
Objective: To evaluate the safety of phacoemulsification associated with modified gonio-assisted trabeculectomy with scissors. Methods: Experimental intervention study in 103 eyes (103 patients) with primary open-angle glaucoma. Phacoemulsification and modified gonioassisted trabeculectomy with scissors (51 eyes, cases) and standard phacoemulsification-trabeculectomy (52 eyes, controls) were performed. In the cases, scissors and vitreoretinal forceps were required and trabeculum was resected by internal approach. Visual acuity, induced astigmatism, loss of endothelial cells and the appearance of surgical complications were evaluated in both groups at three months postoperative follow-up. Results: The uncorrected visual acuity increased at three postoperative months in both groups, however it was higher for the PHACO-TGAM (0.81 ± 0.16 vs 0.71 ± 0.16); with significant differences (p = 0.002). Induced astigmatism was significantly higher in the control group (0.53 ± 1.14 D vs. 1.8 ± 1.20 D, (p < 0.001). Postoperative surgical complications were more frequent in the control group (57 percent vs 73 pèrcent, p = 0.14), the endothelial cell loss did not show significant differences (p = 0.82). Conclusions: the visual recovery and the lower number of complications place phacoemulsification and modified gonio-assisted trabeculectomy with scissors as the technique of choice for the treatment of patients with cataract and primary open-angle glaucoma(AU)
Subject(s)
Humans , Trabeculectomy/methods , Phacoemulsification/methodsABSTRACT
El síndrome de distensión de la bolsa capsular es una rara complicación de la cirugía de catarata. El objetivo principal fue exponer los principales hallazgos oftalmológicos de esta enfermedad, y las diferentes alternativas de diagnóstico y tratamiento para afrontar esta infrecuente y tardía complicación de la cirugía de catarata. Consiste en la adhesión del borde de la capsulorrexis al lente intraocular, colocado en un saco capsular. Tal aposición dificulta que el líquido fluya a través de la apertura de la cápsula anterior y se acumule en el saco capsular. Se presenta un paciente masculino de 71 años con antecedentes de cirugía de catarata por facoemulsificación en el ojo derecho. Refirió que desde hace 11 meses ha notado disminución de la visión. En el examen oftalmológico del ojo derecho se constató agudeza visual sin corrección de 0,3 por cartilla de Snellen, la cual mejoró a 1,0 con una corrección de -1,00 dioptría D. La exploración con lámpara de hendidura descartó cualquier tipo de inflamación del segmento anterior. Su presión intraocular fue de 18 mmHg. Mostró una cámara anterior poco profunda, con un desplazamiento anterior del iris y un saco capsular distendido. La cápsula posterior estaba separada de la superficie posterior del LIO con contenido líquido transparente. Se diagnosticó síndrome de distensión de la bolsa capsular. Se sometió a una capsulotomía posterior con láser Nd: YAG. En la evaluación posterior, el paciente mostró agudezas visuales no corregidas de 1,0 por cartilla de Snellen en ambos ojos. El síndrome de distensión de la bolsa capsular es una complicación tardía e infrecuente de cirugía de catarata con múltiples factores de riesgo, pero de rápida solución(AU)
Capsular bag distension syndrome is a rare complication of cataract surgery. The main objective was to expose the main ophthalmological findings of this disease and the different diagnostic and treatment alternatives to deal with this infrequent and late complication of cataract surgery. It consists of adhesion of the capsulorhexis rim to the intraocular lens, placed in a capsular bag. Such apposition makes it difficult for fluid to flow through the anterior capsule opening and accumulate in the capsular sac. We present a 71-year-old male patient with a history of cataract surgery by phacoemulsification in the right eye who 11 months ago reported decreased vision in the same eye. The ophthalmologic examination of the right eye showed an uncorrected visual acuity of 0.3 by Snellen chart, which improved to 1.0 with a correction of -1.00 D diopter. Slit lamp examination ruled out any type of anterior segment inflammation. His intraocular pressure was 18 mmHg. She showed a shallow anterior chamber, with an anterior displacement of the iris and a distended capsular sac. The posterior capsule was separated from the posterior surface of the IOL with clear fluid content. Capsular bag distension syndrome was diagnosed. He underwent posterior capsulotomy with Nd: YAG laser. On further evaluation, the patient had uncorrected visual acuities of 1.0 by Snellen chart in both eyes. Capsular bag distension syndrome is a late and infrequent complication of cataract surgery with multiple risk factors, but with rapid resolution(AU)
Subject(s)
Humans , Cataract/complicationsABSTRACT
Purpose: Angle kappa has been considered to play a role in causing glare and haloes despite accurate centration during implantation of multifocal intraocular lenses following phacoemulsification. There is a lack of substantial data regarding whether angle kappa is a constant entity or changes following ocular surgical procedures. To answer this question, in this prospective observational study, we measured change in angle kappa following phacoemulsification, and studied the ocular biometric parameters correlating with this change. Methods: Angle kappa was measured objectively using synoptophore. Ocular Biometric parameters (Anterior Chamber Depth, Corneal White?to?White measurement, Lens Thickness, and Axial Length) using LenStar LS 900 Haag Streit Anterior Segment imaging system. outcome measures were a quantitative change in angle kappa from the preoperative value by one degree or more and observation of correlation between change in angle kappa and ocular biometric parameters. The Wilcoxin Signed Rank Test was used to determine the difference between pre?operative and post?operative measurements for angle kappa. A p?value of less than 0.05 was considered statistically significant. Pearson's correlation coefficient was employed to find the relationship between preoperative ocular biometric parameters and a change in angle kappa. A linear regression model was used to derive an equation considering corneal white?to?white measurement as the predictor and change in angle kappa as the outcome measure. Results: A significant change in angle kappa was recorded, and a significant correlation was found with corneal white to white measurements. This change could be predicted preoperatively, for a known corneal white to white measurement using the standard equation y=mx+c. Conclusion: This study explains the possible cause of dissatisfaction among seemingly ideal patients who undergo multifocal IOL implantation and the potential for better decision? making during patient selection for multifocal IOL implantation.
ABSTRACT
With high incidence, high disability rate and serious impact on patients' quality of life, advanced primary angle-closure glaucoma (PACG) with cataract is a severe eye disease in China and its main treatment method is surgery.Phacoemulsification cataract extraction and intraocular lens implantation (PEI) combined with trabeculectomy has been used to treat advanced PACG with cataract, but there are many postoperative complications.Recently, combined PEI, goniosynechialysis (GSL) and goniotomy (GT) has been proven to be a safe and effective surgical treatment for advanced PACG with cataract.At present, the combined PEI+ GSL+ GT surgery has been widely applied, but there is still a lack of uniform standards for its clinical application.Therefore, it is necessary to formulate a detailed and complete recommendation of the surgical procedures for PEI+ GSL+ GT, to standardize its application in clinical practice.Based on the analysis of the existing problems, some glaucoma experts in China have formulated detailed and complete operation norms, as well as expert recommendations on surgical indications and contraindications, anesthetic methods, surgical techniques and perioperative medication to standardize the application process of PEI+ GSL+ GT in clinical practice.