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Purpose: To evaluate the prediction error (PE) in pediatric traumatic cataract surgery involving primary or secondary intraocular lens implantation (IOL) and the factors affecting it. Methods: Retrospective data of unilateral traumatic cataract eyes of children aged ≤16 years were collected between February 2019 and March 2022 at a tertiary eye care hospital. Absolute PE was calculated by deducting the target refraction from the observed refraction at 6 weeks postsurgery following suture removal. Simulated PE was calculated in eyes with corneal scar replacing the affected eye keratometry (K) with the K of the fellow eye and standard K (44D) and was then compared with absolute PE. Results: Fifty children with a mean age of 9.5 years (2–16 years) were included. Mean absolute PE was 1.63 ± 1.8D (0 to 9D). Absolute PE was not affected by the age at surgery, method of biometry, duration of injury, type of cataract surgery, position of IOL, and preoperative keratometry. The absolute PE was affected by axial length (AXL) being 2D in AXL of 22.01 ± 0.74 mm (P = 0.039) in univariate analysis. In multivariate analysis, none of the factors affected the absolute PE. In 34 eyes with corneal scar, higher variability in PE was observed. The standard K resulted in greater simulated PE as compared to the affected eye average K in eyes with scar involving the visual axis. Conclusion: Absolute PE following pediatric traumatic cataract was studied. It was higher in shorter AXLs. In corneal scar involving the visual axis, using the fellow eye K yielded lesser simulated PE as compared to standard K.

Background: In July 2023, an outbreak of viral conjunctivitis swept across India. A knowledge of clinical features and outcome of treatment helps in the management of future outbreaks. AIM: The aim of this study was to report the clinical presentation, treatment, and outcome in patients affected during the outbreak of viral conjunctivitis. Setting and Design: This was a multicentric retrospective case series. MATERIALS AND METHODS: This study reviewed the medical records of all consecutive patients diagnosed with viral conjunctivitis between July 1, 2023, and August 10, 2023, in five centers across India. Results: Of the 793 patients, 525 (66.2%) were male and 268 (33.8%) were female, with a mean age of 34.1 ± 19.0 years. The mean symptom duration was 2.6 ± 2.1 days with bilateral disease in 591 (74.5%) patients. The common ocular signs were conjunctival congestion (793, 100%), lid edema (479, 60.4%), follicles (607, 76.5%), and conjunctival hemorrhages (339, 42.7%). Artificial tears were used in 730 (92.1%) patients, antibiotic eye drops in 661 (83.4%) patients, and steroid eye drops in 428 (54.0%). The time to resolution was the least in patients who had been treated with only artificial tears (4.61 ± 2.24 days) and was maximum in patients who had been treated with topical steroids (6.5 ± 2.51 days), and the difference was significant (P < 0.001). Conclusion: The presence of conjunctival hemorrhages indicated acute hemorrhagic conjunctivitis. Although many patients were treated with topical antibiotics, it was unnecessary, as the shortest resolution time was found in patients who had been received supportive therapy with artificial tear eye drops and not topical antibiotics or steroids.

Purpose: The aim was to analyse the knowledge and awareness regarding Ayushman Bharat – Pradhan Mantri Jan Arogya Yojana (AB-PMJAY) within the operational districts of two high-volume non-profit eye organisations in Uttar Pradesh. Challenges faced by beneficiaries and non-beneficiaries are also examined. Methods: A prospective cross-sectional survey from November 2021 to April 2022 was conducted across operational districts of organisations A and B. Cluster sampling was used to select participants in randomly selected villages with 200 or more households, within 10–15 km of existing vision centres. A semi-structured interview schedule was used to collect data. The means of AB-PMJAY indicators were estimated. Awareness was estimated as a summed score. Multivariate logistic regression was applied to check the effects of the socio-economic and socio-demographic factors on the awareness of AB-PMJAY for both organisations separately and together. Results: A total of 1151 participants were interviewed: 52.9% from the catchment area of organisation A and 47.1% from that of organisation B. From the catchment of organisations A and B, 82.6% and 22.9% participants, respectively, had heard of the scheme, mostly from family and friends. Whereas 43% interviewees from the catchment area of organisation A and 8.5% from that of organisation B had knowledge about at least one topic, only 8.5% and 2.8%, respectively, were knowledgeable about all topics. Village effect was found to be significant for most of the knowledge and awareness indicators in both catchments. Only 37.8% and 20.2% of the catchment from organisations A and B, respectively, were AB-PMJAY cardholders. Of the services availed, 50% were cataract surgery. Almost 40% of the applicants faced some challenges while securing the AB-PMJAY card and 9% while using the AB-PMJAY card. Family income was found to be the only common predictor of knowledge at both locations. Conclusion: Varied awareness and limited knowledge in catchment villages put the onus on community eyecare organisations to spread awareness in their catchment, which may increase the uptake and utilisation of the scheme.

Purpose: Optic nerve head (ONH) evaluation plays a key role in differentiating normal from glaucomatous disk. Thinning of the inferior neuroretinal rim (NRR) has been noted in early glaucoma. However, NRR thickness in different quadrants appears to depend on various factors including central retinal vessel trunk exit (CRVT) position. We evaluated ocular parameters that determined the NRR thickness in the different quadrants of normal eyes. Methods: Retrospective review of demographic and ocular data from 773 eyes of 388 subjects with normal ONH over one year was undertaken. Results: Nearly 54% were males, and the mean age was 43.2 years. The CRVT exit was central in 50% (773). The common site for noncentral CRVT was superotemporal (ST) [37%, 141/384] followed by inferotemporal (IT) [35%, 135/384]. With noncentral CRVT, the probability that the inferior, superior, nasal and temporal (ISNT) rule was not followed was 1.42 times (P < 0.001). The thinnest rim quadrant (TRQ) was mostly ST (69%) irrespective of CRVT location. The TRQ was IT in 40% when CRVT was noncentral and 82% with IT CRVT exit. With noncentral CRVT, round disks favored noncompliance [132 (54.1%), odds ratio (OR) 2.56] with the ISNT rule. The OR of noncompliance with the ISNT rule increases 1.89 times with inferonasal CRVT and 1.22 times with a unit increase in the axial length. Conclusion: TRQ was IT in IT CRVT, and noncompliance with the ISNT rule was observed with large disks, longer axial length, and noncentral CRVT. This implies that despite the ISNT rule being violated these eyes do not have optic nerve pathology and should not be subjected to unnecessary diagnostic tests.

Context: This study adds to the existing body of literature on the role of optical coherence tomography (OCT) parameters in active thyroid eye disease (TED) among the Indian population. Purpose: Comparison of choroidal vascularity index (CVI) and subfoveal choroidal thickness (SFCT) in active and inactive TED. Settings and Design: An observational, cross-sectional analytical study conducted at a tertiary eye care hospital in North India that included patients with active and inactive TED. Methods: Demographic details and clinical evaluation were performed for all TED patients. SFCT was determined with OCT by using the Cirrus linear measurement tool. CVI was calculated using Image J software. The SFCT and CVI measurements were compared between both groups. Statistical Analysis Used: Comparison between active and inactive TED groups was done using Mann–Whitney U test for non-parametric data and Student t test for parametric data. Multivariate regression analysis was performed with SFCT and CVI as dependent variables. Results: Sixty-two eyes of 31 patients were included. Thirteen eyes had active TED, and 49 eyes had inactive TED. SFCT was significantly lower in eyes with higher clinical activity score (CAS) and older age. No significant difference was found in CVI between active and inactive TED eyes. Conclusion: SFCT was lower in eyes with higher CAS and older age. Our findings differ from previous studies, which showed a positive correlation between SFCT and CAS. There was no significant difference in CVI between active and inactive TED eyes.

Purpose: To report the types of keratoplasty and analyze trends over a period of two decades in central and northern India. Methods: This was a retrospective review of eye bank registries of six tertiary eye care centers located in central and north India from 2005 to 2021. The indications and various keratoplasty procedures were compared between 2005–2012 and 2013–2021 to analyze the trend. Results: A total of 13,223 corneal grafts were performed, of which therapeutic penetrating keratoplasty (TPK) (5719, 43.3%) was the most common procedure, followed by optical penetrating keratoplasty (OPK) (5528, 41.8%), Descemet stripping endothelial keratoplasty (DSEK) (1279, 9.7%), deep anterior lamellar keratoplasty (DALK) (376, 2.8%), Descemet membrane endothelial keratoplasty (DMEK) (215, 1.6%), patch grafts (75, 0.6%), and keratoprostheses (31, 0.2%). Overall, OPK procedures decreased (−14.1%, P < 0.001), but TPK (+3.1%, P < 0.019), DSEK (+7.1%, P < 0.001), and DMEK (+1.9%, P < 0.001) procedures increased. Although there was an increasing trend in the use of DALK (+0.8%, P < 0.083) and keratoprostheses (+0.3%, P = 0.074) procedures, the trends were not statistically significant. Conclusion: In keeping with worldwide trends, an increasing trend in lamellar keratoplasties was observed in central and northern India during the past decade. The trend was significant for DSEK. However, as corneal ulcers and scars were the major indications for keratoplasty, TPK and OPK remained the most common procedures.

Purpose: To evaluate the association between obstructive sleep apnea (OSA) and thyroid eye disease (TED) and its effect on disease activity. Methods: A prospective case–control study was conducted from January 2020 to March 2022. All TED patients (group A) were clinically evaluated. The activity of thyroid eye disease was calculated based on the clinical activity score (CAS), and grading of severity was done according to the EUGOGO classification. All TED patients (group A) were screened for OSA using the Snoring Tired Observed Pressure (STOP)-Bang survey. Age- and gender-matched control group patients (group B) without TED were screened for OSA. Results: One hundred TED patients and 138 control patients without TED were included in the respective groups. Sixty-two (62%) patients in group A and 48 (34.78%) patients in group B were having high risk of OSA, and this difference was statistically significant (P = 0.001). Further, in group A patients, on univariate analysis, TED activity was significantly associated with a high risk of OSA (P = 0.009). On multivariate logistic regression analysis, OSA also showed significant association with TED activity (odds ratio [OR]: 4.14, 95% confidence interval [CI]: 1.11-18.85 at 10% level; P = 0.05). Conclusion: Our study showed that OSA is significantly associated with TED disease and its activity. However, no significant association was found between OSA and severity of the disease.

Background: Although studies compare the accuracy of spot photoscreeners, few evaluate photoscreeners in community settings. To our knowledge, all studies from India have been purely hospital based, particularly in children under 5 years. Aim: The aim was to evaluate the effectiveness of using a commercially available photoscreener for pediatric vision screening in a community setting. Settings and Design: This cross-sectional comparative study was conducted from December 2018 to February 2019 in a north-eastern district of Delhi. Methods: The automated Spot™ Vision Screener was used to screen the vision of preschoolers. A result displayed as “complete eye exam recommended” on the photoscreener was considered as screening positive and the child was referred to the pediatric ophthalmology unit of a tertiary eyecare institution, as per predefined international guidelines. Statistical Analysis: Referral rate and positive predictive value (PPV) of using the photoscreener were considered as primary outcome measures. Results: A total of 1205 children were screened using a photo-screener. Almost 16.4% of them were identified and referred a significantly higher referral rate than that in the historic control (2.7%, P < 0.001). Nearly 51.5% of the referred children reported to the unit. The PPV of pediatric eye screening done in a community setting by the photoscreener for refractive error (RE) was 81.4%. Fifty-nine percent of the children detected with REs were found to be at risk of amblyopia. Mean spherical equivalent, sphere, and cylinder of final glass prescription were significantly different from that of photoscreener refraction. Conclusion: Photoscreener improves the referral rate and has a high PPV. It could be a standard tool to screen preschoolers in community settings.

Purpose: Consensual eye intra-ocular pressure (IOP) increase has been reported following ipsilateral glaucoma surgery. The study evaluated the need for increase in anti-glaucoma medications (AGM) ± glaucoma surgery to control the IOP in consensual eye following unilateral glaucoma surgery. Methods: Data of 187 consecutive patients who underwent either trabeculectomy or AGV implant were collected. Index (IE) and fellow eye (FE) IOP (baseline, follow-up day 1, week 1, months 1 and 3), acetazolamide and AGM use, FE surgery, glaucoma status, and relevant ophthalmological data were collected. Results: A significant increase from a baseline IOP of 14.4 mmHg was noted at week 1 (15.8 mmHg, p-0.005) and month 1 (15.62 mmHg, p-0.007) in FE (n-187). Among the 61 patients (33%, n-187) who needed additional intervention to reduce FE IOP, 27 (14.4%) underwent FE trabeculectomy. In the IE trabeculectomy group (n-164), significant increase in FE IOP was noted in week 1 (15.87 mmHg, p-0.014) and month 1 (15.61 mmHg, p-0.02), and in the IE AGV group (n-23) at day 1 (15.91 mmHg, p-0.06). Pre-operative acetazolamide resulted in significant increase in FE IOP at week 1 and month 1. Maximum increase in FE IOP of nearly 3.5 mm Hg was noted when IE IOP was persistently

Purpose: This study was conducted to examine microbiological profile with their antibiotic sensitivity in cases of bacterial keratitis in north and central India to ensure appropriate use of antibiotics. Methods: The microbiology laboratory records of 228 patients with culture-proven bacterial keratitis from 1st January to 31st December 2019 were analyzed. Cultured bacterial isolates were subjected to antimicrobial susceptibility testing to antibiotics commonly used in the treatment of corneal ulcer. Chi-squared or Fisher's exact test were applied to check the significance of difference between the susceptibility levels of antibiotics. Results: The prevalence of Staphylococcus aureus and Pseudomonas aeruginosa–induced keratitis was higher in northern India, whereas that by Streptococcus pneumoniae was more prevalent in central India. In central India, 100% of S. pneumoniae isolates were found to be sensitive to ceftriaxone compared to 79% in northern India (P = 0.017). In comparison to 67% of isolates from north India, 15% of S. aureus isolates from central India were found to be sensitive to ofloxacin (P = 0.009). Similarly, 23% of isolates from central India were found sensitive to amikacin compared to 65% of isolates from north India (P = 0.012). P. aeruginosa isolates from central India were found to be sensitive to ceftazidime in 63% of cases compared to 21% of isolates from north India (P = 0.034). Conclusion: Prevalence of bacteria and their susceptibility to antibiotics are not uniform across geography. Vancomycin remained the most effective drug in all gram-positive coccal infections. S. aureus susceptibility to amikacin was significantly greater in north India. P. aeruginosa showed less susceptibility as compared to previous reports.

Purpose: The purpose of this study was to assess the performance of the tertiary centers (TCS) and vision centers (VCs) of the four organizations participating in this research, once the lockdown was lifted, and to compare it with the performance during the same period of the previous year. Methods: This was a cross-sectional study assessing eyecare utilization in the first 2 months after resumption of services post the lockdown in 2020 and comparing that across the same time period in 2019. Anonymized data containing basic demographic details, proportions of patient visits and their reasons, as well as referral information was collected. The drop percentage method was used, and P values were calculated using paired t-tests. Results: Four TCs and 60 VCs were included. Overall, outpatient attendance dipped 51.2% at TCs and 27.5% at VCs, across the 2 years. At both levels of care delivery, the percentage drop in females was more than that in males; however, the overall drop at VCs was less than that at TCs, for both sexes. Eyecare utilization in pediatric populations dropped significantly more than in adult populations, across the overall sample. There was no significant change in referrals for refractive error as a proportion of total outpatients, although there was a significant decline in the same for cataract and specialty treatment. Conclusion: VCs are valuable and successful model for eyecare delivery especially in the continued aftermath of the COVID-19 pandemic.

Purpose: Cataract remains the leading cause of blindness and visual impairment in most low-and middle-income countries, with the greatest burden borne by women. To achieve Global Action Plan targets, cataract programs must target people, especially women, with maximum need. This study examines whether cataract surgical programs in three major north Indian eyecare institutions are equitable and describes a refined indicator for reporting equity. Methods: Retrospective one-year cross-sectional study of cataract surgery utilization using routine administrative data from three north Indian eyecare institutions. Patient data were categorized by paying category, sex, and preoperative visual acuity. Comparisons were made between payment categories and sexes. Results: Out of the total number of patients operated, 86,230 were in the non-paying category and 56,738 in the paying category. Overall, 8.2% were blind, 21.1% were severely visual impaired (SVI) or worse, and 86.1% were moderate visual impaired (MVI) or worse. Non-paying patients had a significantly higher proportion of poorer visual categories compared to paying patients [(blind, 9.7% vs. 5.8%; SVI or worse, 24.6% vs. 15.8%; and MVI or worse, 89.1% vs. 81.6%, respectively, (P < 0.001)]. Women had significantly higher proportion of poorer visual categories than men [(blind, 8.9% vs. 7.4%, SVI or worse, 21.9% vs. 20.3% and MVI or worse 87.6 vs. 84.7%) (P < 0.001)]. Conclusion: The institutions primarily provided surgery to patients with maximum need: too poor to pay, low visual acuity, and women. Similar data from all service providers of a region can help estimate the proposed “equitable cataract surgical rate”: the proportion of patients operated with maximum need among those operated in a year. This can be used for targeting people in need.

Aims: This study analyzes the prevalence and types of refractive errors among truck drivers, as well as their uptake of glasses. Subjects and Methods: Retrospective cross-sectional study of data collected between July 2017 and June 2018, through eye camps held across the national capital region. An optometrist conducted a comprehensive eye examination. Refractive error was defined as myopia (spherical equivalent of at least −0.5 diopter [D]), hyperopia (spherical equivalent of at least +0.5 D), or astigmatism (only cylinder of 0.5 D or more). Drivers requiring spectacles to read at a normal distance (35–40 cm) were categorized as having presbyopia. Those needing both distance and near vision correction were analyzed separately. Statistical Analysis: Data were analyzed for the prevalence of refractive errors and its types. Spectacles uptake and its association with age categories, number of affected eyes, type and severity of refractive errors were analyzed. Statistical analysis was carried out using R software version 3.1.1 and Excel 2013. Results: Refractive error (including presbyopia) was over 26% in the 4059 truck drivers screened. 8.8% needed distance correction, 24.3% needed near correction and 6.6% needed both, at least in one eye. Uptake was only 47% among those prescribed glasses and was higher among drivers requiring only near correction. Conclusions: Our study highlights the importance of eye examination among truckers. There is a need to increase the uptake of spectacles by increasing awareness and developing better models of spectacle delivery.

Purpose: To compare the five-year incidence of acute post-operative endophthalmitis following cataract surgery, between centers with and without laminar air flow and high-efficiency particulate air (HEPA) filters in operating rooms. Methods: Retrospective analysis of medical records of patients operated in a single network of a tertiary and four secondary hospitals across north India. Cases of endophthalmitis were identified from the records between January 2013 and June 2018. Protocols and consumables were standardized across all hospitals. The only infrastructural difference being the presence of laminar air flow and high energy particulate air filters in operating rooms of the tertiary center. The type of surgery, along with the demographic and socio-economic details, were captured and analyzed, using z-test for proportions and logistic regression. Results: Out of 88,297 cataract surgeries conducted, 36 cases of endophthalmitis were reported. The incidence of endophthalmitis across the network was estimated to be 0.041%, (95% CI: 0.027 to 0.054). There was no statistically significant difference between the incidence of POE at the tertiary (0.042%) and secondary centers (0.039%). Certain risk factors for high endophthalmitis incidence were identified, namely patients undergoing small incision cataract surgery and belonging to lower socio-economic status. However, for both factors the difference was not statistically significant. Conclusion: The five-year incidence of acute post-operative endophthalmitis in our network was found comparable to the best reported in literature. Incidence at secondary centers, without laminar air flow and high energy particulate air filters was found comparable to that in the tertiary center having these facilities.