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Purpose: To report the 1?year clinical outcomes related to safety, efficacy, predictability, contrast sensitivity, patient satisfaction, complications, and overall results with Optiflex Genesis and Eyecryl Plus (ASHFY 600) monofocal aspheric intraocular lenses (IOLs) and compare the same with Tecnis?1 monofocal IOL. Methods: This prospective, single?center, single?surgeon, randomized, three?arm study included 159 eyes of 140 eligible patients who underwent cataract extraction with IOL implantation with any of the three study lenses. Clinical outcomes related to safety, efficacy, predictability, contrast sensitivity, patient satisfaction, complications, and overall results were compared at a mean follow?up of 1 year (12 ± 1.20 months). Results: Preoperatively, age and baseline ocular parameters of all the three groups were matched. At 12 months post?op, no significant differences were noted among the groups in terms of mean postoperative uncorrected and corrected distance visual acuity (UDVA and CDVA, respectively) sphere, cylinder, and spherical equivalent (SE; P > 0.05 for all parameters). Eighty?nine percent eyes in the Optiflex Genesis group as against 96% eyes in the Tecnis?1 and Eyecryl Plus (ASHFY 600) groups were within ± 0.5 D, and 100% of eyes in all the three groups were within ± 1.00 D of SE accuracy. Postoperative internal higher?order aberrations (HOAs) and coma, and mesopic contrast sensitivity at all spatial frequencies were comparable across all the three groups. Two eyes in the Tecnis?1 group, two eyes in the Optiflex group, and one eye in the Eyecryl Plus (ASHFY 600) group underwent YAG capsulotomy at the last follow?up. No eye in any of the groups showed glistenings or required IOL exchange due to any reason. Conclusion: At 1?year post?op, all the three aspheric lenses showed comparable results in visual and refractive parameters, post?op aberrations, contrast sensitivity, and posterior capsule opacification (PCO) behavior. Further follow?up is needed to evaluate the long?term behavior for refractive stability and PCO rates of these lenses. Trial registry: CTRI/2019/08/020754 (www.ctri.nic.in).
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AIM: To evaluate the clinical efficacy of wearing base curve aspheric orthokeratology(OK)lens in the control of myopia.METHODS: A prospective study was conducted. A total of 94 cases(94 eyes)of myopia aged 8～13 years old who were fitted with orthokeratology(OK)lens in our hospital from January 2020 to July 2021 were selected(for patients who received OK lens in one eye, the eye is selected as the observation eye, and for patients who receive OK lens in both eyes, the right eye is used as the observation eye). Patients were divided into two groups according to the design of the OK lens, with 46 cases wearing base curve aspheric OK lens in study group and 48 cases wearing base curve spheric OK lens in control group. The study group and the control group were further divided into low myopia group(-3.00D< SE ≤-0.75D)and moderate myopia group(-6.00D< SE ≤-3.00D)according to the baseline spherical equivalent(SE), with 52 cases(52 eyes)in the low myopia group and 42 cases(42 eyes)in the moderate myopia group. Uncorrected visual acuity(UCVA)was evaluated at 1d, 1wk, 1, 3, 6 and 9mo after wearing lenses, and axial length were measured at 6mo and 1a after wearing lenses respectively.RESULTS: All patients completed follow-up, and there was no significant differences in UCVA(LogMAR)between the study group(-0.12±0.08)and the control group(-0.17±0.07)after wearing the OK lens for 1mo(P>0.05); the mean axial length elongation between the two groups had no significant differences after wearing lenses for 6mo and 1a(all P>0.05). In the low myopia group, the axial length elongation of the study group was 0.19±0.17mm after wearing OK lens for 1a, which was significantly lower than that of the control group(0.31±0.18mm; P<0.05); while in the moderate myopia group, the axial length elongation was 0.22±0.18mm, and it had no significant differences with that in the control group(0.19±0.12mm; P>0.05). There was no significant differences in axial length elongation between the low myopia group and the moderate myopia group in study group after wearing lenses for 6mo and 1a(P>0.05), while there was differences in axial length elongation between low myopia group and moderate myopia group in the control group after wearing lenses for 6mo(0.15±0.13 vs. 0.05±0.12mm)and 1a(0.31±0.18 vs. 0.19±0.12mm; all P<0.05).CONCLUSION: Wearing base curve aspheric OK lens can effectively improve the UCVA and control the elongation of axial length. For patients with low myopia, base curve aspheric OK lens had a better efficacy in controlling the elongation of axial length than the spheric OK lens.
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Purpose: Phacoemulsification with intraocular lens (IOL) implantation is the standard of care for cataractous eyes. Monofocal IOLs are spherical or aspheric. The aspheric design of IOLs reduces the spherical and higher-order aberrations and impacts contrast sensitivity post cataract surgery. There are some studies, but data in the Indian setting with the IOLs we used is lacking. We aimed to compare the effect of implantation of spheric and aspheric foldable intraocular lenses on postoperative quality of vision, spherical aberration, and contrast sensitivity. Methods: This prospective observational study was conducted at a tertiary care hospital with an ophthalmology specialty, data collection from January 2017 to May 2018 in 100 patients. Patients meeting the inclusion criteria were selected. Their preoperative and postoperative data were collected and divided into groups based on whether spherical or aspheric IOL was implanted after cataract surgery. Variables assessed were visual acuity on days 7 and 30, spherical aberrations, and contrast sensitivity was assessed at 1?month postoperative. Results: The mean age of the patients in this study was 64 ± 8 years with a majority of patients (60%) being females. There is no significant difference in postoperative visual acuity between the two groups. Internal SA was significantly lower (~50%) in eyes implanted with aspheric IOLs (P value = 0.004, 0.0001) compared with the spherical group. Contrast sensitivity of patients of the aspheric group was significantly better (P value <0.05). Conclusion: The optical design of the aspheric IOLs reduced spherical aberrations and increased contrast sensitivity.
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AIM: To evaluate the visual quality of patients after modified design aspheric balance curve(ABC)with intraocular lens(IOL)implantation, and to analyze the influencing factors of clinical IOL selection and guide the patient's IOL selection plan. METHODS: A prospective case-control study was conducted in 67 patients(74 eyes)with simple cataract underwent phacoemulsification and foldable aspheric IOL implantation, and 23 eyes in the observation group were implanted with modified design IOL(HOYA Vivinex XY1 group), the control group was implanted with 51 eyes of traditional design IOL(Tecnis ZCB00 group with 27 eyes, IQ SN60WF group with 24 eyes). The uncorrected visual acuity, the best corrected visual acuity, total ocular spherical aberration(SA)and coma under different pupil diameters(3, 4, 5, 6mm), and different pupil diameters(3, 4, 5mm)were measured 1wk and 1mo after operation, the modulation transfer function(MTF)curve, objective scattering index(OSI), intraocular scattered light value Log(s)and contrast sensitivity were obtained. Statistical analysis was performed on the obtained data.RESULTS: The uncorrected visual acuity and best corrected visual acuity at 1wk and 1mo after operation in the three groups were significantly improved compared with those before operation, there was no significant difference among groups(P>0.05). The difference of total ocular spherical aberration was statistically significant among the three groups with 5 and 6mm pupil diameter 1wk after operation(P=0.045, 0.037)and there were differences among three groups in pupil diameter of 6mm at 1mo after operation(P=0.042). Comparing the total ocular coma aberration, there were differences among the three groups at 1wk and 1mo after the operation at the pupil diameter of 5 and 6 mm(P<0.05). With the increase of pupil diameter at 1wk and 1mo after operation, the total ocular spherical aberration in the HOYA Vivinex XY1 group was lower than that in the other two groups. The MTF values of the Vivinex XY1 group were higher than those that of the control group at each spatial frequency, there was no significant difference among groups(P>0.05), and there were no statistical differences in objective scattering index, intraocular scattered light value Log(s)and contrast sensitivity among the three groups(P>0.05).CONCLUSION:The improved design of the modified Vivinex IOL can reduce the total ocular spherical aberration and coma, improve the visual quality, and provide a new method for the selection of aspheric IOL.
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AIM:To explore the effect of base curve aspheric orthokeratology lens in the treatment of adolescents with myopia and moderate to high astigmatism, and its influence on ocular surface morphology and tears.METHODS:A total of 232 adolescents(464 eyes)with myopia and moderate to high astigmatism treated in the hospital from December 2018 to March 2020 were selected as the research subjects. They were randomly divided into control group(116 patients, 232 eyes)and observation group(116 patients, 232 eyes). The control group was treated with base curve spheric orthokeratology lens, while the observation group was treated with base curve aspheric orthokeratology lens. Comparison was made between the two groups in terms of the correction effect, objective visual quality, ocular surface morphology, tears related indicators before and after wearing the lenses, and the incidence of complications after wearing the lenses for 12mo.RESULTS:After wearing the lenses, the uncorrected visual acuity(UCVA)and diopter of the two groups were significantly improved. The UCVA and diopter of the observation group were significantly better than those of the control group(all P<0.05). After wearing the lenses, the whole-eye and corneal coma, spherical aberrations and high-order aberrations were significantly increased, while Strehl ratio and modulation transfer function were decreased in the two groups. Trefoil aberrations was significantly increased(all P<0.05). These indicators in the observation group were better than those in the control group(all P<0.05). After wearing the lenses, the epithelium fluorescence staining scores, ocular surface disease index(OSDI)scores were significantly decreased in the two groups(P<0.05), but there was no statistically significant difference between the two groups(P>0.05); The noninvasive tear breakup time(NI-BUT)of the two groups were significantly decreased after wearing the lenses(P<0.05), but there was no statistically significant difference between the two groups(P>0.05). The Schirmer Ⅰ test and tear meniscus height of the two groups showed no statistically significant difference before and after wearing the lenses(P>0.05). The incidence rates of complications in the observation group and the control group after wearing the lenses were close(6.9% vs 6.0%, P >0.05).CONCLUSION:Base curve aspheric orthokeratology lens is superior to base curve spheric orthokeratology lens in the treatment of adolescents with myopia and moderate to high astigmatism in terms of correction effect and objective visual quality. The two lenses have similar influence on ocular surface morphology and tears.
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@#Night-wear aspheric orthokeratology lens(refers to OK lens)is used to correct vision while sleeping at night, which is one of the few ways to prevent myopic children from wearing glasses during the day, so often recommended as the first choice in clinical practice for the myopic population of 8-16 years old. The main effect of OK lens is producing reasonable compression on the surface of the eye to reduce the curvature of the cornea. At present, as a recognized non-surgical method for the treatment of juvenile myopia, the lens material and the optometry level of OK lens have been continuously innovated and upgraded. Meanwhile,because OK lens directly cover the ocular surface, so long-term wearing definitely affects the ocular surface microenvironment, including meibomian glands, tear film, conjunctiva, cornea, ocular surface microorganisms and so on, and even causes the imbalance of these ocular surface microenvironments, thereby leading to the occurrence and development of ocular surface diseases. In order to expect clinicians to give comprehensive consideration when wearing OK lens for teenagers and increase the safety and effectiveness of wearing OK lens, this article analyzed the effects of wearing OK lens on ocular surface meibomian gland morphology, tear film morphology and function, conjunctival microcirculation, corneal cell morphology, ocular surface microorganisms and other factors.
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@#AIM: To contrast the visual acuity and visual quality after implantation of regional refraction multifocal IOL and aspheric unifocal IOL.<p>METHODS: The study enrolled 82 cases(96 eyes)of age-related cataract patients, underwent phacoemulsification surgery in our hospital. According to the intraoperative intraocular lens implantation type, they were divided into two groups: the observation group(46 cases, 53 eyes, implanted with Oculentis MF30 regional refractive multifocal IOL)and the control group(36 cases, 43 eyes, implanted with ADAPT AO aspherical unifocal IOL). The total visual acuity and visual quality 3mo after operation were compared between the two groups. <p>RESULTS: Three months after surgery, compared with the control group, the observation group had significantly improved near and middle vision, significantly increased contrast sensitivity, significantly increased modulation transfer function cutoff frequency, Strehl ratio, objective scatter index and OQAS values, significantly decreased VF-12-CN score(38.16±4.05 <i>vs</i> 45.72±4.69), and significantly increased desorption rate score(11.38±1.04 <i>vs</i> 9.23±0.87)and surgical satisfaction score(3.57±0.36 <i>vs</i> 3.32±0.31)(<i>P</i><0.05). Age >65 years old, illiteracy, uncorrected distant visual acuity of good eye ≥0.1(LogMAR), implantation of aspheric unifocal IOL are the influencing factors of the quality of life of cataract patients. <p>CONCLUSION: Compared with aspheric unifocal IOL, Oculentis regional refraction multifocal IOL can provide good overall vision in the short term after operation, and the contrast sensitivity, visual quality, quality of life, glasses removal rate and satisfaction are significantly improved.
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@#With the continuous development of cataract surgery and intraocular lens(IOL), the evaluation of visual quality after IOL implantation has become a research hotspot, and aberration is an important factor that affecting visual quality. After more than 60y of development, IOL has made great improvement in optical design. Due to the fact that conventional spherical IOL has a positive spherical aberration and cannot correct the positive spherical aberration existing in the normal human cornea, it is improved to an aspherical IOL having a negative spherical aberration and a zero spherical aberration. The former can correct the cornea positive spherical aberration, improve the contrast sensitivity and improve visual quality. However, if the optical position does not match, the formation of other higher-order aberrations will have greater impact on visual effects. Although the latter is well tolerated to tilt and decentration, it still cannot compensate for the positive aberration from the cornea. The advent of the non-constant aberration IOL provides a new way for cataract surgeons to solve this problem. In this paper, the concept of aberration, the design principle and advantages and disadvantages of different kinds of aspheric IOL, as well as the observation of clinical application effect of non-constant aberration aspheric IOL are discussed.
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Resumo Objetivo: A catarata é a principal causa de cegueira reversível no mundo e seu tratamento é baseado em cirurgia, facectomia. A evolução do procedimento tem se baseado em vários pilares, mas é no desenvolvimento de novos tipos de lentes intraoculares que vem mostrando inovações consideráveis. As lentes atuais são capazes, além de tratar a catarata, de corrigir erros refracionais. O objetivo deste estudo foi avaliar a qualidade de vida e de visão pós-facectomia, comparando as lentes multifocais (Restor), tóricas, monofocais esféricas (SN60AT) e monofocais asféricas. Métodos: A pesquisa abrangeu 54 pacientes submetidos a facectomia com implantação de uma das lentes há, pelo menos, 3 meses. Os pacientes responderam questionário de qualidade de vida Cataract TyPE Specification sobre satisfação de visão, dependência de óculos para diversas atividades diárias e presença de fenômenos disfóticos. Para análise dos dados foram utilizados os testes de Kolmogorov-Smirnov, quanto a normalidade e ANOVA com teste de Tukey, quanta parametria. Em comparações não paramétricas, utilizou-se o teste de Mann-Whitney. Em todas as análises foi usado o mesmo nível de significância (p<0,05). Resultados: Numa escala de 0 a 10, a pesquisa mostrou que as lentes SN60AT, esféricas monofocais, foram as que obtiveram menor nível de satisfação entre as 4 lentes, obtendo média de 8,7 (DP= 1,30; IC ± 0,655), seguido das esféricas monofocais (média= 8,3 - DP= 1,83; IC ± 0,927), das esféricas multifocais (Restor) (média = 8,9 - DP = 1,42; IC ± 0,721) e as tóricas (média = 9,1 - DP = 1,67; IC ± 0,844) como a de maior nível de satisfação. Em relação à dependência dos óculos, a lente Restor foi a que mostrou melhor desempenho, com menor dependência dos óculos. Fenômenos disfóticos foram mais frequentes nos pacientes que tiveram implantada a lente SN60AT seguida de lente Restor. Conclusão: Conclui-se que as lentes SN60AT foram as lentes que causaram menor grau de satisfação, tendo os fenômenos disfóticos umas das principais queixas, associada a dependência dos óculos pós-cirurgia. Os pacientes que tiveram as lentes Restor implantadas, apesar dos sintomas disfóticos mais presentes do que as lentes monofocais tóricas e monofocais esféricas, tem o mesmo nível de satisfação, e ainda proporciona maior independência dos óculos.
Abstract Objective: Cataract is the leading cause of reversible blindness in the world and its treatment is based on surgery, facectomy. The evolution of the procedure has been based on several pillars, but it is in the development of new types of intraocular lenses that has been showing considerable innovations. Current lenses are capable, in addition to treating cataracts, of correcting refractive errors. The aim of this study was to evaluate the quality of life and post-facectomy vision, comparing multifocal lenses (Restor), toric, spherical monofocals (SN60AT) and aspheric monofocals. Methods: The study included 54 patients undergoing a facectomy with implantation of one of the lenses for at least 3 months. The patients answered questionnaire quality of life Cataract TyPE Specification on vision satisfaction, glasses dependence for various daily activities and presence of dysphothetic phenomena. For the analysis of the data, the Kolmogorov-Smirnov tests were used, regarding normality and ANOVA with Tukey's test, how much parametric. In non-parametric comparisons, the Mann-Whitney test was used. In all analyzes, the same level of significance was used (p <0.05). Results: On a scale of 0 to 10, the research showed that single-spherical spherical SN60AT lenses were the ones that obtained the lowest level of satisfaction among the four lenses, obtaining an average of 8.7 (SD = 1.30, CI ± 0.655), followed (mean = 8.9 - SD = 1.42, CI ± 0.721) and the toric (mean = 8.3 - SD = 1.83, CI ± 0.927), multifocal spherical (Restor) 9.1 - SD = 1.67, CI ± 0.844) as the highest level of satisfaction. Regarding the dependence of the glasses, the Restor lens showed the best performance, with less dependence on the glasses. Dysphasic phenomena were more frequent in patients who had implanted the SN60AT lens followed by Restor lens. Conclusion: It is concluded that the SN60AT lenses were the lenses that caused less satisfaction, and the dysphothetic phenomena were one of the main complaints, associated with the postoperative glasses dependence. Patients who had restored Restor lenses, despite the more present dysphoric symptoms than spherical monofocal and single-focal lenses, have the same level of satisfaction, and still provide greater independence of the glasses.
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Humans , Male , Female , Aged , Quality of Life , Cataract Extraction/psychology , Lens Implantation, Intraocular/psychology , Lenses, Intraocular , Postoperative Period , Vision, Ocular , Cataract Extraction/methods , Visual Acuity , Prospective Studies , Surveys and Questionnaires , Patient Satisfaction , Lens Implantation, Intraocular/methods , Eyeglasses/psychologyABSTRACT
The article is to study the objective evaluation method of the imaging quality of aspheric intraocular lens with different design concepts by establishing the model eye which is close to the actual corneal spherical aberration characteristics. Combined with the research data of corneal spherical aberration, the simulated cornea corresponding to Zernike c(4,0) coefficient 0.00 μm, 0.10 μm, 0.20 μm and 0.28 μm was established respectively. The optical quality of the measured simulated corneal lenses basically reached the theoretical design effect, and the deviation between the MTF value and the theoretical design value was equivalent to the MTF test repeatability. The establishment of model eye for artificial lens provides a research tool for the evaluation of aspheric intraocular lens imaging quality.
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Cornea , Lens Implantation, Intraocular , Lenses, Intraocular , Reference Standards , Quality Control , Vision, OcularABSTRACT
Objective To observe the long-term visual quality and clinical effect of aspheric diffractive multifocal intraocular lens (IOL) implantation for congenital and developmental cataracts in childhood.Methods A retrospective cohort study on multifocal IOL implantation for congenital and developmental cataracts in childhood (aged 8 to 14 years) was performed in the First Affiliated Hospital of Zhengzhou University from August 2013 to January 2015.The clinical data of 67 eyes from 46 congenital cataract patients who received phacoemulsification with IOL implantation were collected.The AMO (ZMB00) IOL was implanted in 34 eyes of 24 patients in the multifocal IOL group,and Bausch & Lomb (MI60) IOL was implanted in 33 eyes of 22 patients in the monofocal IOL group.The distance,intermediate and near vision acuity were analyzed in 3,6 and 12 months after surgery,including uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA).The wavefront aberrations,modulation transfer functions (MTF) and stereopsis were obtained with iTrace Analysis System,Optec-6500 Visual Functional Analyzer and Titmus Stereo Test Chart,respectively in 12 months after surgery.The near additional degree,removing glasses rate and myopic shift were compared between the two groups in postoperative 12 months.Results The intermediate and near UCVA in the multifocal IOL group were obviously better than those in the monofocal IOL group 3,6 and 12 months after surgery (intermediate:Z=-3.74,-4.36,-3.66;all at P=0.00.near:Z=-2.67,-2.50,-2.33;all at P＜0.05).There were no significant differences between the two groups in total aberration,high and low order total aberrations,comatic aberration,trefoil aberration,spherical aberration and secondary astigmatism under the 5.0 mm optical zone in 12 months after surgery (all at P＞0.05).The MTFs under the 5.0 mm optical zone and 5,10,15,20,25,30 c/d in the multifocal IOL group were insignificantly lower than those in the monofocal IOL group (all at P＞0.05).In addition,the near stereopsis,near additional degree and myopic shift (AD) were reduced in the multifocal IOL group compared with monofocal IOL group (both at P＜0.05).The glasses removing rate was 93.3％ in the multifocal IOL group,which was significantly higher than 33.3％ in the monofocal IOL group (x2 =23.25,P =0.00).No significant difference in the incidence of posterior capsular opacification was found between the two groups (P＞0.05).The myopic shifting rates were 16.7％ and 83.3％ in the multifocal IOL group and monofocal IOL group,with a significant difference between the two groups (x2=15.02,P=0.00).Conclusions The aspheric multifical IOL implantation can achieve good and stable distance,intermediate and near visual acuities,provide better near stereopsis,reduce postoperative dependence on spectacles and decrease the incidence of myopic shift in child cataract patients.
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PURPOSE: We compared the ocular aberration and clinical outcome between different aspheric intraocular lenses (IOL) in both eyes. METHODS: This prospective randomized controlled study was comprised of patients with bilateral cataract who received two different aspheric IOLs implanted in both eyes: negatively aspheric Tecnis® ZCB00 and spherically neutral Akreos® MI60. Total and corneal aberrations computed by Wavescan® and Pentacam® were assessed at 6 months to investigate the effects of the IOL's spherical aberration on the eye and to analyze the incidence and degree of posterior capsule opacification. By using spherical aberration of the cornea and the IOLs, values calculated via Ray-tracing software and Wavescan® were compared. Total spherical aberration was analyzed by the MATLAB program and converting the pupil size to 6.0, 4.5, 3.0 mm. RESULTS: A total of 25 patients were included. Regarding pre-operative corneal aberration, ZCB00 group was 0.232 ± 0.119 µm while MI60 group was 0.240 ± 0.117 µm, and there was no difference between the two IOLs. At 6 months after total ocular spherical aberration, MI60 group (pupil size 6.0 mm; 0.296 ± 0.097 µm, 4.5 mm; 0.094 ± 0.032 µm, 3.0 mm; 0.019 ± 0.006 µm) had more positive values than ZCB00 group (pupil size 6.0 mm; 0.051 ± 0.105 µm, 4.5 mm; 0.009 ± 0.034 µm, 3.0 mm; 0.002 ± 0.007 µm) (p < 0.001). When calculated using the ray tracing method, based on the results after surgery, MI60 group's total spherical aberrations were higher than ZCB00 group. However, from 1 month to 6 months after surgery, the uncorrected distance visual acuity, spherical equivalent and posterior capsule opacification showed no differences between the two IOLs. CONCLUSIONS: In eyes with aspheric IOLs with negative spherical aberration, spherical aberration was lower than spherically neutral aspheric IOLs. Regarding postoperative visual acuity, spherical equivalent and posterior capsule opacification, there were no significant differences between the two groups.
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Humans , Capsule Opacification , Cataract , Cornea , Incidence , Lenses, Intraocular , Methods , Prospective Studies , Pupil , Visual AcuityABSTRACT
OBJECTIVE@#To compare patient-reported outcomes after implantation of the ZA9003 intraocular lens (IOLs), or the MCX11 ASP IOLs or the spherical IOLs (HQ-201HEP).@*METHODS@#Prospective nonrandomized controlled trial was used. A total of 105 patients (210 eyes) were divided into three groups according to the type of IOLs: ZA9003 (35 patients, 70 eyes), MCX11 ASP (35 patients, 70 eyes) or HQ-201HEP (35 patients, 70 eyes). The main outcome was scores of Catquest nine-item short-form questionnaire. Additional outcome was best corrected visual acuities, spherical aberration (SA) and total higher-order aberrations (HOAs).@*RESULTS@#The global score was significantly lower in the spherical IOL group than the aspherical IOL group of -020 μm SA (P 0.05). Significant differences were also found in question 2, question 5, question 6 and question 8 between the spherical IOLs and the aspherical IOLs.@*CONCLUSION@#Implantation of an aspherical IOL could improve vision-related quality of life compared with a spherical IOL. However, there were no statistically significant differences in vision-related quality of life between aspheric IOLs with different negative spherical aberrations.
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Objective To compare patient-reported outcomes after implantation of the ZA9003 intraocular lens (IOLs), or the MCX11 ASP IOLs or the spherical IOLs (HQ-201HEP). Methods Prospective nonrandomized controlled trial was used. A total of 105 patients (210 eyes) were divided into three groups according to the type of IOLs: ZA9003 (35 patients, 70 eyes), MCX11 ASP (35 patients, 70 eyes) or HQ-201HEP (35 patients, 70 eyes). The main outcome was scores of Catquest nine-item short-form questionnaire. Additional outcome was best corrected visual acuities, spherical aberration (SA) and total higher-order aberrations (HOAs). Results The global score was significantly lower in the spherical IOL group than the aspherical IOL group of −020 μm SA (P 0.05). Significant differences were also found in question 2, question 5, question 6 and question 8 between the spherical IOLs and the aspherical IOLs. Conclusion Implantation of an aspherical IOL could improve vision-related quality of life compared with a spherical IOL. However, there were no statistically significant differences in vision-related quality of life between aspheric IOLs with different negative spherical aberrations.
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PURPOSE: To compare the clinical outcomes of glistening-free intraocular lens (IOL) and conventional 1-piece aspheric IOL in implanted in-the-bag. METHODS: After phacoemulsification performed by a single surgeon, 2 different IOLs were implanted: enVista MX60 (glistening-free 1-piece aspheric IOL) in 38 eyes (group A) and AcrySof IQ (conventional 1-piece aspheric IOL) in 46 eyes (group B). Glare symptom score (0-5) obtained by questionnaires, best corrected visual acuity (BCVA), Functional Acuity Contrast Test (FACT), posterior capsular opacity (PCO), glistening formation and spherical equivalent error were compared and analyzed preoperatively and 6 months and 12 months postoperatively. RESULTS: A statistically significant improvement of BCVA and contrast sensitivity postoperatively was observed in all groups. There was statistically significant increase of glistening in group B compared with group A. However, there was no significant difference of FACT scores of spatial frequency in A, B, C, D and E columns and glare symptom score (0-10) obtained by questionnaires 12 months after surgery. Spherical equivalent errors were -0.38 +/- 0.27 D and -0.36 +/- 0.28 D for groups A and B, respectively. PCO occurred in 2 eyes in group A and 4 eyes in group B. CONCLUSIONS: EnVista MX60 IOL showed less glistening formation than AcrySof IQ IOL, however, there was no significant difference in terms of vision quality such as BCVA, FACT and glare symptom score at 12 months postoperatively.
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Cataract , Contrast Sensitivity , Glare , Lenses, Intraocular , Phacoemulsification , Visual AcuityABSTRACT
AIM: To study the clinical effect of implantation of multifocal intraocular lens ( lOL ) combined with cataract extraction and lOL in cataract patients. ●METHODS:A total of 86 cases ( 86 eyes ) of cataract patients admitted to our hospital from Feb. 2014 to Mar. 2015 were divided into two groups according to the order of admission, each of 43 cases. The 43 patients with cataract extraction combined with non spherical astigmatism correction type monofocal lOL implantation for the treatment as the control group, the other 43 patients with cataract extraction combined with aspheric toric multifocal lOL implantation were treated as the observation group. After 1y of follow- up, the visual acuity, astigmatism and the contrast sensitivity of the two groups were observed. ●RESULTS: There was no difference in visual acuity between two groups (P>0. 05). Postoperative observation group of uncorrected near visual acuity ( UCNVA ) was significantly better than the control group (P0. 05). There was no difference in astigmatism between the two groups before and after operation ( P> 0. 05 ). There was no difference in contrast sensitivity between two groups ( P>0. 05). The contrast sensitivity of the control group was better than that of the observation group (P0. 05). ● CONCLUSION: Astigmatism correction multifocal intraocular lens on corneal astigmatism after surgery has a good effect, the naked eye near visual effect is better, the rest of the visual acuity is stable, good visual quality, worthy of clinical application and promotion.
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?AIM: To evaluate the refractive predictability achieved with an aspheric intraocular lens ( IOL ) and to develop a preliminary optimized algorithm for the calculation of its power ( PIOL ) .?METHODS:This study included 65 eyes implanted with the aspheric IOL LENTIS L-313 ( Oculentis GmbH ) that were divided into 2 groups:12 eyes (8 patients) with PIOL≥23. 0 D (group A), and 53 eyes (35 patients) with PIOL<23. 0 D ( group B ). The refractive predictability was evaluated at 3mo postoperatively. An adjusted IOL power ( PIOLadj ) was calculated considering a variable refractive index for corneal power estimation, the refractive outcome obtained, and an adjusted effective lens position ( ELPadj ) according to age and anatomical factors.?RESULTS: Postoperative spherical equivalent ranged from -0. 75 to +0. 75 D and from -1. 38 to +0. 75 D in groups A and B, respectively. No statistically significant differences were found in groups A (P=0. 64) and B (P=0. 82 ) between PIOLadj and the IOL power implanted ( PIOLReal ) . The Bland and Altman analysis showed ranges of agreement between PIOLadj and PIOLReal of +1. 11 to -0. 96 D and +1. 14 to -1. 18 D in groups A and B, respectively. Clinically and statistically significant differences were found between PIOLadj and PIOL obtained with Hoffer Q and Holladay I formulas (P<0. 01).?CONCLUSION: The refractive predictability of cataract surgery with implantation of an aspheric IOL can be optimized using paraxial optics combined with linear algorithms to minimize the error associated to the estimation of corneal power and ELP.
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Abstract?AlM:To discuss the feasibility of using the visual quality analyzer KR - 1W to guide the relatively personalized aspheric intraocular lens ( lOL ) implants to make the whole eye spherical aberration close to 0. 1μm.?METHODS: ln this prospective case series study, the corneal spherical aberration with 6mm aperture of 73 patients (100 eyes) was measured with KR-1W Visual Function Analyzer 1d before surgery. For the sake of the whole postoperative spherical aberration were close to 0. 1μm, 9 cases ( 16 eyes ) with corneal spherical aberration 0. 35μm were implanted Tecnis ZA9003 lOL, named Tecnis group. Aspherical lOL was implanted after phacoemulsification through a cornea 2. 75mm incision without suture. Uncorrected visual acuity, beat corrected visual acuity, spherical aberration of the whole eye and jnternal optics (mainly lOL) at 6mm pupil diameter were examined at 3mo postoperatively. The relevant data were analyzed using t-test and variance analysis.?RESULTS: The whole ocular spherical aberration at 6mm pupil diameter in all postoperative were 0. 084 ± 0. 032μm;in Tecnis group, the data were 0. 091 ± 0. 021μm;in AO group, the data were 0. 0814-0. 013μm;lQ group were0. 093 ± 0. 042μm. There was no significantly different between the predicted value and actual value of ocular spherical aberration at 6 mm pupil diameter in all postoperative ( t = 1. 932, P = 0. 061 ) and in the three groups. The difference value in the predicted values of the preoperative spherical aberrations of the whole eye and the actual values after surgery was 0. 013±0. 041μm; there was no statistically significant difference ( F=2. 537, P=0. 091 ) . Respectively compared the uncorrected visual acuity and besta corrected visual acuity among three groups of postoperative, no significant difference were found (F=0. 897, P=0. 421;F=1. 423, P=0. 097).?CONCLUSlON: Personality selection of aspheric lOL based on preoperative corneal spherical aberration of patients is feasible and produces satisfactory target postoperative total spherical aberration.
ABSTRACT
PURPOSE: To evaluate preoperative and postoperative spherical aberrations after cataract surgery based on selecting spherical or aspheric intraocular lens (IOL) according to preoperative corneal aberration. METHODS: The medical records of patients who underwent phacoemulsification and IOL implantation in the posterior chamber by a surgeon (H.J.C) were reviewed (68 patients, 97 eyes). IOL was selected based on preoperative corneal spherical aberration measured by corneal topography (ATLAS 9000, Carl Zeiss). The target postoperative total ocular spherical aberration was set to zero (0) and one of the following lenses was chosen: Acrysof SA60AT (n = 25), Acrysof IQ (n = 36) or Tecnis(R) ZCB00 (n = 36). The Wavescan aberrometer and the corneal topography were obtained postoperatively. Absolute prediction errors of postoperative total ocular spherical aberration were analyzed. RESULTS: Preoperative corneal spherical aberration was 0.241 microm; total postoperative ocular spherical aberration was 0.0509 microm (Acrysof SA60AT: 0.0954 microm, Tecnis(R) ZCB00: 0.0374 microm, Acrysof IQ: 0.0335 microm). Postoperative corneal spherical aberration was 0.232 microm, which was not significantly different from the preoperative value (p = 0.199). Postoperative ocular spherical aberration was 0.051 microm; 0.095 microm (Acrysof SA60AT), 0.034 microm (Acrysof IQ), and 0.037 microm (ZCB00). The reducing amounts of spherical aberration were 0.185 microm (Acrysof IQ) and 0.311 microm (ZCB00). The overall absolute prediction error was 0.068 microm. The absolute prediction error of the Acrysof SA60AT group was 0.092 microm, Tecnis(R) ZCB00 group was 0.067 microm and Acrysof IQ group was 0.054 microm. There was no significant difference among the 3 groups (p = 0.089). CONCLUSIONS: Aspheric IOLs can efficiently reduce total ocular spherical aberrations according to preoperative corneal spherical aberrations.
Subject(s)
Humans , Cataract , Corneal Topography , Lenses, Intraocular , Medical Records , PhacoemulsificationABSTRACT
To observe the clinical outcome of implanting AcrySof lQ Toric intraocular lens to correct corneal astigmatism in cataract surgery, and to evaluate the result and rotational stability of AcrySof lQ Toric after cataract surgery. ●METHODS: A retrospective study of 26 eyes in 21 cataract patients with corneal astigmatism. All patients implanted AcrySof lQ Toric intraocular lens. The preoperative and postoperative uncorrected visual acuity ( UCVA ), best corrected visual acuity ( BCVA ), preoperative corneal astigmatism, anticipated residual astigmatism, total astigmatism, postoperative residual astigmatism and Toric lens axis were detected and measured. ●RESULTS: All patients' visual acuity and best corrected visual acuity improved significantly. The mean refractive cylinder decreased significantly after surgery from (2. 05± 0. 57)D to (0. 55±0. 33)D (t = 13. 574, P 0. 05 ). Three months after surgery, there was no significant difference between preoperative (2. 01±0. 58)D and postoperative (-1. 89±0. 53) D corneal astigmatism (t =1. 908, P> 0. 05). The rotation of intraocular lens were ●CONCLUSlON: The AcrySof lQ Toric lens make cataract patients enjoy the better UCVA including good rotational stability in the correct of corneal astigmatism. The AcrySof lQ Toric implantation is an effective option for the correct of preexisting corneal astigmatism in cataract surgery.