Assessing the therapeutic role of trehalose and hyaluronic acid: implications for patient care.

OBJECTIVE: This Systematic review aims to assess the efficacy of trehalose and hyaluronic acid in enhancing ocular recovery post-cataract surgery, focusing on their impact on tear film stability, ocular surface integrity, and patient-reported outcomes. METHODS: A comprehensive search was conducted across MEDLINE, PubMed, and Cochrane Library databases to identify randomized controlled trials investigating the efficacy of trehalose, hyaluronic acid, or their combination in post-cataract surgery care. The inclusion criteria focused on peer-reviewed studies in English, detailing outcomes relevant to ocular recovery such as tear film stability, ocular surface integrity, patient-reported discomfort, or visual acuity (VA). The quality of the included studies was assessed using the Cochrane Risk of Bias Tool and synthesized the data qualitatively. RESULTS: Four qualitative investigations met the inclusion criteria. The studies collectively assessed the efficacy of a 3% trehalose and 0.15% hyaluronic acid eye drop solution in reducing postoperative eye symptoms compared to various control solutions. Parameters measured included tear break-up time (TBUT), Fluorescein staining, tear production (Schirmer test), and Ocular Surface Disease Index (OSDI) scores. The results indicated significant improvements in tear film stability and ocular surface health for the treatment groups compared to controls, with a notable decrease in patient-reported discomfort. The study showed an improvement of - 18 (± 14.6) in the treatment group compared to - 7 (± 8.0) in the control group for OSDI. For TBUT, the treatment group improved by 3 (± 1.2) s, whereas the control group improved by 0.3 (± 0.71) s. VA, measured on a scale of 0-100, increased to 17 (± 0.7) in the treatment group compared to 15 (± 1.1) in the control group. CONCLUSIONS: Trehalose and hyaluronic acid may be beneficial in the postoperative period by enhancing tear film stability and ocular surface health. While the results are promising, further research is needed to confirm these findings, understand the mechanisms of action, and explore broader applications.

Learning curves of novice residents on cataract surgery simulator: the E3CAPS pedagogic study.

INTRODUCTION: Training novice ophthalmology residents on the EyeSi® simulator increases cataract surgery safety. However, there is no consensus regarding how much training residents should perform before their first time on patients. We evaluated the French national training program through the analysis of the learning curves of novice residents. METHODS: This prospective multicentric pedagogic study was conducted with French novice residents. Each resident completed the recommended four two-hour training sessions and performed a standardized assessment simulating standard cataract surgery before the first session (A0), at the end of the first (A1), second (A2), third (A3) and fourth (A4) sessions. For each surgical step of each attempt, the following data were collected: score, odometer, completion time, posterior capsular rupture and cumulative energy delivered (ultrasounds) during phacoemulsification. A performance threshold was set at a score of 80/100 for each surgical step, 400/500 for the overall procedure. Only descriptive statistics were employed. RESULTS: Sixteen newly nominated ophthalmology residents were included. Median score progressively increased from 95 [IQR 53; 147]) at A0 to 425 [IQR 411; 451] at A4. Despite a significant progression, the "emulsification" step had the lowest A4 scores 86 [IQR 60; 94] without reduction in completion time, odometer or ultrasounds delivered. The rate of posterior capsular rupture decreased linearly from 75% at A0 to 13% at A4 during "emulsification" and from 69 to 0% during "irrigation and aspiration". At A4, only 25% [8; 53] of residents had > 80 at each step and only 75% [47; 92] had > 400/500 overall. CONCLUSION: A training program consisting of four two-hour sessions on the EyeSi simulator over four consecutive days effectively enhances the surgical skills of novice ophthalmology residents. Undergoing more training sessions may improve scores and decrease the incidence of surgical complications, particularly at the emulsification step of cataract surgery. The learning curves presented here can reassure residents who are progressing normally and help identify those who need a further personalized training program.  TRIAL REGISTRATION: ClinicalTrials registration number: NCT05722080 (first submitted 22/12/2022, first posted 10/02/2023).

Ten-year trends of delayed sequential bilateral cataract surgery (DSBCS) in Sweden: a register-based study.

PURPOSE: To study the trend of delayed sequential bilateral cataract surgery (DSBCS) in Sweden in the past decade. METHODS: This register-based cohort study utilized data from the Swedish National Cataract Register (NCR) from 2010 through 2019. Register files from patients who underwent cataract surgery in both eyes during the study period were linked using their social security numbers. Bilateral surgeries on different days were classified as DSBCS. The study investigated the association between DSBCS within 3 months and several variables with stratification and multivariate logistic regression. The following variables were used: operation year, region, private or public unit, age, sex, indication for surgery, type of intraocular lens (IOL), preoperative visual acuity, ocular comorbidity, posterior capsule rupture and perioperative difficulties. RESULTS: During the study period, 368,106 patients underwent DSBCS, of which 62.6% (n = 230,331) had bilateral surgery within 3 months. The median time between the surgeries was 61 days (interquartile range 26-161 days), showing regional variations. Better visual acuity in the fellow eye, presence of ocular comorbidity, various perioperative events and complications were associated with longer time to surgery of the second eye. Conversely, cataract surgery in more recent years, private clinic, increasing age, anisometropia and multifocal IOL were associated with shorter timespan between surgeries. CONCLUSIONS: The majority of DSBCS were conducted within a 3-month timeframe, with the interval between surgeries decreasing throughout the study period. Several rational factors were associated with the time difference, in addition to regional variations. Many patients would probably benefit from less time between the surgeries, and we encourage a clinical practice taking the whole patient's visual function into account.

Visual and Demographic Risk Factors for Falls and the Impact of Cataract Surgery in Elderly Patients.

Purpose: To evaluate the effect of cataract surgery and visual impairment and the associated risk factors on the frequency of falls among older adults in northeast Iran. Methods: This cross-sectional study, conducted between 2019 and 2020, analyzed the potential risk factors of falling in older adults over 50 years of age. To this end, 380 patients were randomly selected by convenience sampling and classified into two groups: those who had undergone cataract surgery in the last 12 months (surgery group) and those who had not (cataract group). The data were collected from the medical records and face-to-face interviews, and logistic regression was used to identify potential risk factors for falling. Results: The frequency of falls in the cataract and surgery groups was 18.9% and 11.6%, respectively. The mean decimal visual acuity of the dominant eye was significantly lower in the cataract group than in the surgery group (P < 0.001). There were no significant differences in the mean number of medications used, Charlson Comorbidity Index score, Instrumental Activities of Daily Living score, and 10-Meter Walk Test speed between the two groups. According to the results of backward logistic regression, taking more than four medications per day and slow gait speed were the most important factors influencing the frequency of falls in older adults. Conclusion: Logistic regression analysis indicated that undergoing cataract surgery is not a significant protective factor against falls. However, older adults in the surgery group experienced fewer falls than in the other group. Besides, the results suggest that taking more than four medications daily and having a slow gait speed are significant fall risk factors.

Intraoperative Aberrometry versus Preoperative Biometry for Intraocular Lens Power Calculations: A Report by the American Academy of Ophthalmology.

PURPOSE: To evaluate the published literature to compare intraoperative aberrometry (IA) with preoperative biometry-based formulas with respect to intraocular lens (IOL) power calculation accuracy for various clinical scenarios. METHODS: Literature searches in the PubMed database conducted in August 2022, July 2023, and February 2024 identified 157, 18, and 6 citations, respectively. These were reviewed in abstract form, and 61 articles were selected for full-text review. Of these, 29 met the criteria for inclusion in this assessment. The panel methodologists assigned a level of evidence rating to each of the articles; 4 were rated level I, 19 were rated level II, and 6 were rated level III. RESULTS: Intraoperative aberrometry performed better than traditional vergence formulas, including the Haigis, HofferQ, Holladay, and SRK/T, and similarly to the Barrett Universal II and Hill-RBF with respect to minimization of spherical equivalent (SE) refractive error. For toric IOLs, IA outperformed formulas that only considered anterior corneal astigmatism and was similar to formulas like the Barrett Toric Calculator (BTC), which empirically account for the contribution from the posterior cornea. In eyes with a history of corneal refractive surgery, IA performed similarly to the Barrett True-K and slightly better than other tested methods, including the Haigis-L, Shammas, and Wang-Koch-Maloney formulas. CONCLUSIONS: Intraoperative aberrometry corresponds well with modern vergence formulas, including the Barrett Universal II, Hill-RBF, BTC, and Barrett True-K. It has greater accuracy than traditional vergence-based IOL power calculation formulas in eyes with and without a history of corneal refractive surgery. FINANCIAL DISCLOSURE(S): Proprietary or commercial disclosure may be found after the references.

Importance of different topographic, biometric, and retinal parameters for calculating IOL power.

The objective is to evaluate the parameters significantly related to calculating the power of the implanted lens and to determine the importance of different biometric, retina, and corneal aberrations variables. A retrospective cross-sectional observational study used a database of 422 patients who underwent cataract surgery at the Oftalvist Center in Almeria between January 2021 and December 2022. A random forest based on machine learning techniques was proposed to classify the importance of preoperative variables for calculating IOL power. Correlations were explored between implanted IOL power and the most important variables in random forests. The importance of each variable was analyzed using the random forest technique, which established a ranking of feature selections based on different criteria. A positive correlation was found with the random forest variables. Selection: axial length (AL), keratometry preoperative, anterior chamber depth (ACD), measured from corneal epithelium to lens, corneal diameter, lens constant, and astigmatism aberration. The variables coma aberration (p-value = 0,12) and macular thickness (p-value = 0,10) were almost slightly significant. In cataract surgery, the implanted IOL power is mainly correlated with axial length, anterior chamber depth, corneal diameter, lens constant, and preoperative keratometry. New variables such as astigmatism and anterior coma aberration and retina variables such as the preoperative central macular thickness could be included in the new generation of biometric formulas based on artificial intelligence techniques.

Sir Harold Ridley as the Pioneer of Intraocular Lenses: His Inspiration Drawn From World War II Pilots.

This article underscores the monumental contributions of Sir Harold Ridley to the development of intraocular lenses (IOLs), which have revolutionized cataract surgery. Sir Harold Ridley, a British ophthalmologist and medical scientist, drew inspiration from the injuries of World War II pilots to pioneer the first successful IOL implantation in 1949 at St. Thomas's Hospital. The lens, made from Perspex CQ, marked the inception of modern cataract surgery. Despite facing considerable skepticism and resistance from the medical community throughout the 1950s and 60s, Ridley's perseverance led to the gradual acceptance of IOLs by the 1970s. Today, Ridley is rightfully recognized as the "father of the intraocular lens," with his groundbreaking work having profoundly impacted the field of ophthalmology and improved the quality of life for millions globally.

Secondary Intrascleral Intraocular Lens Fixation With Lens Capsule Preservation for Aphakic Eyes in Patients With Pseudoexfoliation Syndrome: A Case Series.

We describe three cases of pseudoexfoliation syndrome (PEX) in which good outcomes were achieved after secondary intrascleral intraocular lens (IOL) fixation with capsule preservation for aphakic eyes. Three Japanese patients with PEX underwent phacoemulsification and aspiration (PEA) owing to challenges in IOL intracapsular fixation caused by zonular weakness. Case 1 involved an 83-year-old man with PEX. Six weeks post-PEA, 30-gauge needles were inserted to exit between the capsule and the iris. The IOL was fixed intrasclerally using the double-needle technique. Case 2 involved a 90-year-old man with PEX. The same abovementioned double-needle intrascleral IOL fixation procedure was performed eight weeks post-PEA. Intraoperative vitreous prolapse into the anterior chamber was observed, and anterior vitrectomy was performed. Case 3 involved an 80-year-old man with PEX. Seven weeks post-PEA, the patient underwent the same double-needle intrascleral IOL fixation procedure. Good IOL fixation was achieved in all patients without postoperative iris capture. No serious complications, including retinal detachment and vitreous hemorrhage, were observed. Preserving the capsule during secondary IOL scleral fixation for aphakic eyes can effectively reduce intraoperative vitreous prolapse, minimize surgical invasiveness, suppress iris flutter, and prevent capture of the pupillary IOL, making it a meaningful and acceptable approach, although the long-term risks, such as potential lens capsule drop, should be studied further.

Femtosecond laser assisted cataract surgery in a cataract patient with low vaulted ICL following LASIK: a case report.

BACKGROUND: Apart from the conventional utilization of ICL implantation for the correction of refractive errors, its recent applications extend to correcting refractive errors post laser refractive surgery. Notably, the development of cataracts stands out as a prevalent postoperative complication, often associated with low vault. Previous cases have demonstrated successful management of cataracts with ICL through the combination of FLACS and ICL removal coupled with IOL implantation, resulting in favorable postoperative visual outcomes. Herein, we present a case of cataract with low vault ICL following LASIK and its subsequent management. CASE PRESENTATION: A 46-year-old male presented with vision loss in the right eye for 9 months, and he had undergone LASIK 22 years prior and had ICL implantation in both eyes 2 years ago to correct refractive error. One day after ICL implantation, both eyes exhibited the UDVA of 1.2 and 1.0, well-positioned ICLs, and approximate vault of 150 µm and 200 µm. Six months ago, the patient became aware of blurred vision in the right eye for a duration of 3 months. Examination revealed cloudy lens cortex in the right eye. During the current review, the UDVA of the right eye was 0.6, where nasal wedge-shaped clouding was evident and worsened, while the left eye lens remained transparent. AS-OCT demonstrated the vault of 54 µm in the right eye and 83 µm in the left eye. Considering the patient's history of LASIK and the presence of right eye cataract, a monovision approach was adopted. The patient underwent FLACS combined with ICL extraction and monofocal IOL lens implantation in the right eye. At 10 days postoperatively, the patient exhibited the UDVA of 1.0. CONCLUSIONS: Our report confirms the feasibility of FLACS in managing cataracts in patients with low vault ICL following LASIK. This procedure does not pose significantly greater challenges than in typical cataract cases, although meticulous care remains essential throughout every step of the surgery, particularly during laser scanning and positioning. With adequate preoperative preparation and precise calculation of the IOL power, surgical outcomes can meet expectations fully.

Pseudophakic corneal edema caused by Descemet membrane detachment using high-resolution swept-source OCT imaging.

Background: Small Descemet membrane detachments after cataract surgery are relatively common and most cases do not require any secondary surgical intervention and can be treated conservatively. However, in case of advanced Descemet membrane detachment (DMD), it needs to be recognized and treated appropriately. The advent of anterior segment imaging using optical coherence tomography (OCT) technology has made diagnosing pathologies of the anterior segment accurate and time efficient and has proven as an invaluable tool to guide decision making. Case presentation: A 71-year-old patient presented after complicated cataract surgery with decreased visual acuity and cloudy vision. On examination, best corrected visual acuity was 1.5 logMAR. A high-resolution swept-source OCT (Anterion, Heidelberg Engineering, Heidelberg, Germany) was used to better evaluate and visualize the extent of DMD. An anterior chamber gas bubble was injected to reattach the Descemet membrane (DM) to the corneal stroma. The success of the surgery was visualized using the high-resolution swept-source OCT. This revealed a completely attached Descemet membrane. Conclusions: Clinically, it can be difficult to distinguish the etiology of epithelial and stromal edema post cataract surgery. This case demonstrated the clinical usefulness using high resolution swept source imaging to guide clinical decision making in evaluating timing and treatment success of pneumodescemetopexy after complicated cataract surgery.

Visual, Refractive, Functional, and Patient Satisfaction Outcomes After Implantation of a New Trifocal Diffractive Intraocular Lens.

Purpose: To describe the visual, refractive, functional, and patient satisfaction outcomes of the Clareon® PanOptix® trifocal intraocular lens (IOL). Patients and Methods: This was a prospective longitudinal descriptive study. Patients who underwent cataract surgery with implantation of Clareon® PanOptix® (Alcon Laboratories, Inc.) were included. Monocular refractive outcomes and visual acuity at distance, intermediate, and near were evaluated 1- and 6-months post-op. Binocular contrast sensitivity (M&S® Technologies), binocular defocus curve, and patient satisfaction with the IOL Satisfaction (IOLSAT) and Questionnaire for Visual Disturbance (QUVID) questionaries were assessed at 6-month post-op. Results: Seventy-six Clareon® PanOptix® were implanted bilaterally in 38 patients. The mean age of the patients was 67.63±5.18 years. At 1-month post-op, the monocular Corrected Distance Visual Acuity (CDVA), CIVA and CNVA were 0.00±0.09, 0.02±0.17, and 0.12±0.12 LogMAR, respectively, and CDVA and CNVA were stable at 6-month post-op (p>0.05). No statistical differences were found in post-op spherical equivalent at 1 and 6 months (-0.08±0.27 D and -0.05±0.24 D; p=0.351). A 100% of eyes were within ±0.5 D at 1 month and 6-month post-op. Binocular defocus curve shows three peaks of maximum visual acuity (VA) at 0D (-0.04±0.08 LogMAR), at -1.50D, and -2.50 D (0.01±0.10 LogMAR and 0.03±0.07 LogMAR, respectively). Contrast sensitivity decreased at high spatial frequencies. In patient satisfaction, IOLSAT questionary reveals 78.94% patients "Never" or "Rarely" Needing Glasses and according QUVID questionnaire, 100% of patients report no hazy vision. Conclusion: The PanOptix® IOL platform with the new material Clareon® provides good visual outcomes for distance, intermediate, and near vision, with adequate contrast sensitivity and low visual disturbances.

Behavior of biometric parameters during clinical hours.

PURPOSE: To evaluate and quantify variation of biometric parameters - axial length (AL), anterior chamber depth (ACD), central corneal thickness (CCT) and white-to-white (WTW). METHODS: A population-based retrospective cohort study was performed on patients who underwent a biometry test prior to cataract surgery using the IOL Master 700 (Carl Zeiss Meditec, Jena, Germany) between the years 2017-2021. Differences in these parameters were evaluated between scans executed at different times of the day. RESULTS: 21,975 examinations of 8611 patients were included. Mean age was 70.50±12.56years. The mean time of the biometry exams was 10:52±1:23 AM. Measurements of AL, ACD, CCT and WTW were tested hourly and grouped between 7:00-9:00 AM and 12:00-03:00 PM. All the parameters showed a diurnal increase with a significance of P<0.001 (AL from 23.64±1.5 to 24.01±1.76mm; ACD from 3.29±0.67 to 3.35±0.64mm; CCT from 0.52±0.04 to 0.53±0.04µm and WTW from11.83±0.46 to 11.90±0.51mm). The most significant change was seen in AL. The difference between time groups remained significant in a generalized linear mixed model (P<0.001). CONCLUSIONS: There are fluctuations in AL, ACD, CCT, WTW measurements during office hours. These results raise questions about the significance of timing of the biometry exam and the effect on the ELP calculation.

Examining the Impact of Certificate of Need Laws on the Utilization and Reimbursement of Cataract Surgeries Among Medicare Beneficiaries.

Background: Cataract surgery is an effective and commonly utilized procedure and can significantly improve quality of life and restore economic productivity. Certificate of need (CON) laws aim to regulate healthcare facility expansion and equipment acquisition to curtail costs, enhance quality, and ensure equitable access to care. However, little is known about the impact of CON laws on cataract surgery utilization and reimbursement. Objectives: To compare utilization and reimbursement for non-complex cataract surgery in CON and non-CON states. Methods: This retrospective database review analyzed publicly available data from the Centers for Medicare and Medicaid Services from 2017 to 2021 to identify the Medicare beneficiaries who underwent non-complex cataract surgery using Current Procedural Terminology code 66984 in Medicare outpatient hospitals. Utilization and reimbursement patterns were analyzed in states with and without CON laws using the compound annual growth rate, with reimbursement adjusted by the US Bureau of Labor Statistics Consumer Price Index. Results: The Centers for Medicare and Medicaid Services reported 893 682 non-complex cataract surgeries in the study period; of these, 609 237 were in CON and 280 215 in non-CON states. Inflation-adjusted reimbursement increased in both CON (1.17%) and non-CON (1.83%) states, while the reimbursement in non-CON states was greater than the national average adjusted reimbursement (1.67%). Utilization of non-complex cataract surgery declined during the study period in both CON and non-CON states. A larger decline in utilization was observed in CON states (-7.32%) than in non-CON states (-6.49%). Utilization was slightly higher in non-CON than in CON states for each year except 2019. Discussion: Utilization of non-complex cataract surgery by Medicare beneficiaries declined over the study period in both CON and non-CON states, possibly impacted by the COVID-19 pandemic. Inflation-adjusted reimbursement adjusted for Consumer Price Index increased more in non-CON than CON states, possibly reflecting shifts in market dynamics in CON-regulated states. Conclusions: Surgeons and policymakers should consider the implications of CON laws on the utilization and reimbursement of cataract surgery. Further study is necessary to ascertain whether these trends persist beyond 2021.

Routine preoperative assessment for cataract surgery is a source of frustration for primary care providers.

BACKGROUND: Cataract surgery is one of the most common surgical procedures performed in older adults in the United States and is generally considered to be extremely low-risk. As of 2019, routine preoperative evaluation within 30 days of surgery is no longer mandated by the United States of America (USA) Centers for Medicare & Medicaid Services (CMS) for ambulatory surgery centers, but it is unclear how primary care providers perceive this change. METHODS: We performed a qualitative analysis of semi-structured interviews with six primary care providers to explore primary care providers' perspectives on routine preoperative assessment for cataract surgery. RESULTS: Primary care providers commented on the large number of referrals they receive for preoperative assessment before cataract procedures. The analysis revealed an overarching sentiment of resentment over the time, effort, and resources expended on these assessments. Themes included the lack of awareness of the updated regulations that no longer require a history and physical to be completed within 30 days and the perception of a universal lack of medical necessity to perform preoperative assessment for cataract surgery. Providers also commented on the strain on limited resources and the burden on patients. The relationship between specialties and professional roles emerged as another important theme. CONCLUSIONS: Referrals for preoperative clearance for cataract surgery continue to burden providers, patients, and the health system, and represent an opportunity to streamline care in this patient population.

Ultrasound biomicroscopy in dogs suggests postoperative ocular hypertension may be associated with ciliary cleft changes related to cataract surgery.

OBJECTIVE: To determine whether novel pre- and postsurgical ultrasound biomicroscopy (UBM) measurements of the canine ciliary cleft (CC) are associated with postoperative ocular hypertension (POH) following cataract surgery and to explore the relationship between intraocular pressure and CC UBM measurements. METHODS: Following pharmacologic mydriasis, UBM images were obtained from 31 client-owned dogs before elective cataract surgery, immediately postsurgery, and 4 to 6 hours following surgery or while experiencing POH ≥ 25 mm Hg. Presurgery and the pre- to postsurgery change in CC measurements were assessed for association with POH using individual mixed-effects logistic regression models and forward variable selection models. Linear mixed-effects models were used to evaluate the relationship of intraocular pressure to UBM measurements within the same eye across multiple time points. RESULTS: Presurgical measurements were not predictive of POH development. An increase in pectinate ligament distance and CC area from presurgical baseline to immediate postsurgical measurement was associated with reduced odds of developing POH, while increasing CC length (from apex to mid point on the pectinate ligament) from pre- to postsurgery and immature cataracts was associated with increased odds of POH. CONCLUSIONs: The change in CC morphology following cataract surgery appears more impactful in the development of POH than individual variations in presurgery CC measurements. Several changes in the CC dimensions following surgery appear associated with POH risk. CLINICAL RELEVANCE: This understanding of a potential mechanism of POH development opens new avenues for researching preventative measures associated with modifying surgical techniques to influence CC morphology following cataract surgery.

Retrolental cohesive ophthalmic viscoelastic injection for severe subluxated cataracts: a prospective study.

BACKGROUND: To assess anatomical and functional outcomes of retrolental cohesive ophthalmic viscoelastic injection ("Viscolift technique") in patients with severely subluxated cataracts. METHODS: In the present prospective study, we included patients older than 18 years with severely subluxated cataracts and phacodonesis. Full medical history was obtained at the baseline ophthalmological assessment. A single 25-gauge valved trocar was inserted 4 mm from the limbus and a 27G angled cannula was introduced through the trocar into the retrolental space, while cohesive viscoelastic was progressively injected, in order to center and elevate the cataract to facilitate capsulorhexis. After complete phacoemulsification, a 3-piece intraocular lens (IOL) with a scleral fixated Cionni ring or FIL-SSF scleral fixated IOL was implanted. Patients follow-up interval was 6 months after surgery. RESULTS: Thirteen eyes of 13 patients were enrolled in the study, mean age was 61.5 ± 9.4 years and 53.8% were females. The "Viscolift technique" resulted in centered and more stable cataracts in all cases (100%). After complete phacoemulsification, 61.5% of patients were implanted with a 3-piece IOL with Cionni ring, and 38.5% with a FIL-SSF scleral fixated IOL after complete 25G vitrectomy. Mean BCVA improved from 0.5 ± 0.1 LogMar (20/63 Snellen) to 0.1 ± 0.1 LogMar (20/25 Snellen) (p < 0.001) at the last follow-up. No major complications were noted. CONCLUSIONS: The "Viscolift technique" proved to be a safe and effective surgical approach for recentering and elevating subluxated cataracts, thus allowing the surgeon to perform an easier and better-centered capsulorhexis.

Comparing clinical outcomes of trifocal intraocular lens in patients with and without prior history of laser in situ keratomileusis for myopia.

BACKGROUND: To compare clinical outcomes of trifocal intraocular lens in patients with and without prior history of laser in situ keratomileusis (LASIK). METHODS: A retrospective study included patients who underwent bilateral cataract surgery and PanOptix trifocal intraocular lens (IOLs) implantation. Patients were grouped: Group A for patients with history of LASIK and Group B for patients without history of LASIK. Postoperative outcome measures comprised distance, intermediate, and near visual acuity, manifest refraction, defocus curve, contrast sensitivity, visual quality, patient satisfaction, and the rate of spectacle independence. RESULTS: A total of 288 eyes (144 patients) were included: 132 eyes in Group A and 156 eyes in Group B. At 6 months post-surgery, patients of both groups achieved a continuous satisfying visual acuity from 33 cm to distance. 73% of eyes in Group A and 75% of eyes in Group B were within ± 0.50 D of emmetropia (P > 0.05). The percentages of eyes within ± 1.00 D of emmetropia were 98% for Group A and 96% for Group B (P > 0.05). The total scores of satisfaction were 52.58 ± 3.46 for Group A and 53.23 ± 3.46 for Group B (P > 0.05). Most of patients (98% for Group A, 99% for Group B) were able to be spectacle independence for daily living. 53% of patients in Group A and 51% in Group B experiencd mild to moderate negative visual symptoms, which made it a little or moderate difficult to drive at night. CONCLUSIONS: Cataract patients with and without history of LASIK could safely undergo implantation of the PanOptix IOLs, which results in precise refractive outcomes and satisfactory visual acuity. Although contrast sensitivity decreased and some negative visual symptoms were observed, patients' satisfaction was generally high due to the high rate of spectacles independence. There were no statistically significant differences between the study groups.

Comparison of measurements and calculated lens power using three biometers: a Scheimpflug tomographer with partial coherence interferometry and two swept source optical coherence tomographers.

PURPOSE: To compare the biometric measurements obtained from the Pentacam AXL Wave, IOLMaster 700, and ANTERION and calculate the recommended intraocular lens power using the Barrett Formulae. METHODS: This was a retrospective cross-sectional study of patients who underwent biometry using the Pentacam AXL Wave, IOLMaster 700, and ANTERION. Flat keratometry (K1), steep keratometry (K2), anterior chamber depth (ACD), and axial length (AL) from each device were measured and compared. These parameters were used to calculate the recommended IOL powers using the Barrett formula. RESULTS: The study included 252 eyes of 153 patients. The IOLMaster had the highest acquisition rate among the two biometers. The Pentacam obtained the shortest mean AL, the IOLMaster measured the highest mean keratometry values, and the ANTERION measured the highest mean ACD. In terms of pairwise comparisons, keratometry and axial length were not significantly different between the Pentacam-IOLMaster and ANTERION-IOLMaster groups, while the rest of the pairwise comparisons were statistically significant. In nontoric and toric eyes, 35-45% of patients recommended the same sphere of IOL power. In another 30-40%, the Pentacam and ANTERION recommended an IOL power one step greater than that of the IOLMaster-derived data. 50% of the study population recommended the same toric-cylinder IOL power. CONCLUSIONS: The Pentacam AXL Wave, IOLMaster 700, and ANTERION can reliably provide data for IOL power calculations; however, these data are not interchangeable. In nontoric and toric eyes, 35-45% of cases recommended the same sphere IOL power, and in another 30-40%, the Pentacam and ANTERION recommended one-step higher IOL power than the IOLMaster-derived data. In targeting emmetropia, selecting the first plus IOL power is advisable when using the Pentacam and ANTERION to approximate the IOL power calculations recommended by the IOLMaster 700.

Single-piece Foldable Intraocular Lenses versus Three-piece Intraocular Lenses in the Sulcus following Posterior Capsular Rupture in a Philippine Tertiary Hospital.

Objective: Successful intraocular lens (IOL) placement in cataract surgery is synonymous with the IOL being placed in the capsular bag. When the capsular bag is violated, the ciliary sulcus becomes an option to approximate an in- the-bag position. Studies report that single-piece foldable acrylic (SPA) IOLs are a poor choice for the sulcus. This study aimed to report the visual outcomes and complications of sulcus placement of single-piece intraocular lenses and three-piece intraocular lenses, and compare the design and characteristics to the occurrences of complications. Methods: The medical records of patients were retrospectively reviewed in a single center from 2016-2019. Results: A total of 245 eyes from 237 patients were included in the study with a mean age of 61 years and male predominance. Majority of sulcus implantation occurred during phacoemulsification (87%). Around 82% (n=202) were implanted with single-piece IOLs and 18% (n=43) were three-piece IOLs. Best corrected distance visual acuity (BCDVA) was 20/20 after six months for both groups. Comparison between two groups showed no superiority with each other. Complications notable were elevated intraocular pressure, corneal edema, loss of IOL centration, and pigment dispersion. Smaller optic diameter and overall length predispose to higher probabilities of loss of centration. Pliability, hydrophobicity/hydrophilicity, and material do not correlate with postoperative complications. There were significantly higher numbers of pigment dispersions in IOLs with square-edged design. Conclusions: In conclusion, visual outcomes remain equally excellent for both single-piece and three-piece groups. In contrast, there were more notable complications in single-piece group. Loss of centration tends to occur more with mean optic diameters lower than or equal to 5.50 mm and an overall length of less than 12.50 mm or lower. While appropriate for the capsular bag, square-edged designs were found to be inappropriate for the sulcus. The retrospective design does not allow strong inferences hence caution should be taken in correlating results.

A randomized control study on post-operative iris distortion following small-pupil cataract surgery using B-HEX pupil expander versus Malyugin ring.

Background: The aim of the study was to evaluate postoperative pupil distortion following small pupil cataract surgeries performed using B-HEX and Malyugin rings (MR). Methods: A randomized control trial was conducted from June 2020 to June 2023 at a tertiary eye-care hospital. The study consisted of 64 participants for cataract surgery with small pupil. There were two groups, one undergoing surgery with the use of B-HEX pupil expander and other with MR intraoperatively and the rest of the surgery was proceeded as per the convention. Areas of preoperative and postoperative images was calculated, put into an online software and pupil distortion was calculated in percentage. Two-tailed t-test was used to see the difference between the two groups. Results: Mean age at presentation was 70.5 ± 10.12 years. Most common cause for small pupil was tamsulosin therapy. Mean size of small-pupil was 3.0 ± 1.1 mm. With the application of two rings, mean pupillary area preoperatively was 4178.23 ± 1589.46 and postoperatively was 6100.44 ± 2658.28 following the use of MR, respectively and 30,002.93 ± 13,193.40 preoperatively and 37,648.26 ± 15,207.01 postoperatively following the use of B-Hex ring respectively. Comparing baseline area from pupillary area at 1-month follow-up, a significant increase was noted for both the rings. Also, MR caused significantly more pupillary distortion compared to B-HEX ring (p < 0.05). Conclusion: MR causes significantly more pupillary distortion in the postoperative period compared to B-HEX ring. Though, both the rings cause pupillary distortion, these devices expand the surgical area adequately, ease the procedure, decrease risk of complications achieving good functional visual outcomes.