Prithvi Chandrakanth, Shishir Verghese, Aishwarya Naik, K Chandrakanth
{"title":"The Retilight, a portable LED endo-illuminator.","authors":"Prithvi Chandrakanth, Shishir Verghese, Aishwarya Naik, K Chandrakanth","doi":"10.4103/IJO.IJO_2234_24","DOIUrl":"10.4103/IJO.IJO_2234_24","url":null,"abstract":"<p><p>In modern small-gauge vitreoretinal surgery, the surgeon navigates the occutome and a rigid optical fiber endo-illuminator into the posterior segment. Effective endo-illumination is crucial for minimizing surgical risks and ensuring optimal outcomes by enhancing the visibility of ocular structures. Traditionally, endo-illuminators in vitreoretinal surgery have relied on xenon light sources provided by the vitrectomy system. However, light-emitting diode (LED) light sources have now emerged as a superior alternative, offering both high light intensity and increased reliability. We present our innovation: a 3D-printed portable LED illumination system that connects seamlessly with the optical fiber cables of contemporary vitreoretinal surgery equipment. This device provides a reliable alternative light source in emergencies, such as bulb failure or power outages, and can also function as supplemental illumination, particularly when a chandelier system is used for bimanual vitreoretinal procedures.</p>","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":" ","pages":"912-915"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178357/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jie Chen, Fangzheng Shi, Siya Chen, Yulu Liu, Yuxin Xu
{"title":"Bacterial 16S rRNA gene alterations in the conjunctival sac and lacrimal sac in chronic dacryocystitis.","authors":"Jie Chen, Fangzheng Shi, Siya Chen, Yulu Liu, Yuxin Xu","doi":"10.4103/IJO.IJO_1314_24","DOIUrl":"10.4103/IJO.IJO_1314_24","url":null,"abstract":"<p><strong>Purpose: </strong>Dysbiosis of the microbial community in the lacrimal sac has been associated with the occurrence and development of chronic dacryocystitis. The aim of this study was to investigate the microbial characteristics of the conjunctival sac and lacrimal sac in patients with chronic dacryocystitis using 16S rRNA sequencing and explore their relevance to this condition.</p><p><strong>Methods: </strong>This was achieved through the application of Illumina MiSeq technology for the comprehensive sequencing of 16S rRNA genes in bacterial DNA samples isolated from the conjunctival and lacrimal sacs of 20 patients with chronic dacryocystitis.</p><p><strong>Results: </strong>The conjunctival sac microbiota showed slightly higher diversity compared to the lacrimal sac. However, their microbial communities were similar. In the cohort representing the lacrimal sac, there was a notable reduction in the relative abundance of Proteobacteria. Conversely, an increase in the relative richness of phyla such as Firmicutes, Actinobacteria, and Bacteroidetes was observed. Linear discriminant analysis and effect size analysis elucidated a significant enrichment of the Methylobacterium and Cetobacterium genera within the conjunctival sac cohort, in contrast to the lacrimal sac cohort. The dominant pathway in both sites was biosynthesis according to Kyoto Encyclopedia of Genes and Genomes analysis.</p><p><strong>Conclusion: </strong>In individuals suffering from chronic dacryocystitis, the microbiota of the lacrimal sac exhibits a reduced α-diversity and a comparable β-diversity, alongside exhibiting distinct taxonomic profiles when contrasted with the microbiota of the conjunctival sac.</p>","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":" ","pages":"S410-S417"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143995170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shirali Gokharu, Deepanjali Arya, Deepender Chauhan, Sima Das
{"title":"Ocular surface squamous neoplasia masquerades: Clinical profile and outcome.","authors":"Shirali Gokharu, Deepanjali Arya, Deepender Chauhan, Sima Das","doi":"10.4103/IJO.IJO_3391_23","DOIUrl":"10.4103/IJO.IJO_3391_23","url":null,"abstract":"<p><strong>Purpose: </strong>The diagnosis of ocular surface squamous neoplasia (OSSN) is primarily clinical, confirmed through histopathology, cytology, or imaging. This study describes a series of OSSN patients with atypical clinical presentation masquerading non-neoplastic etiologies, identifies clinical features distinguishing OSSN from benign lesions, and thus aids clinicians in early diagnosis and prompt management.</p><p><strong>Methods: </strong>A retrospective review was conducted on medical records of OSSN patients, and patients initially diagnosed with anterior segment infection or inflammation were identified. Data collected included clinical presentation, initial diagnosis and treatment, response to treatment, final diagnosis, treatment type and outcome, and clinical clues to the diagnosis.</p><p><strong>Results: </strong>In the study period, 153 OSSN patients were identified from medical records of which 11 patients (7.2%) were initially diagnosed as anterior segment infection or inflammation. One patient presented with limbal stem cell deficiency, two with nodular episcleritis and necrotizing scleritis, and eight with various corneal involvement such as dendritic ulcer, corneal degeneration/dystrophy, corneal dermoid, exposure keratopathy, peripheral ulcerative keratitis, and perforated corneal ulcer. Three underwent extended enucleation due to intraocular spread, two required excision biopsies with adjuvant topical therapy, and the remaining patients were treated with topical therapy (Interferon α -2b 1% and/or mitomycin-C 0.04%). One patient was lost to follow up, one had a recurrence, and nine achieved complete resolution at mean follow-up of 18 months.</p><p><strong>Conclusion: </strong>OSSN can mimic ocular surface infection, inflammation, or degeneration. A meticulous anterior segment evaluation can provide clinical clues to diagnosis which can be confirmed on histopathology.</p>","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":" ","pages":"S405-S409"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178429/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144012130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessment of peripapillary nerve fiber layer thickness, optic nerve head, and macular parameters using spectral domain optical coherence tomography in patients with migraine.","authors":"Tanya Yadav, Pradeep Kumar Panigrahi, Lolly Pattnaik, Lulup Kumar Sahoo","doi":"10.4103/IJO.IJO_2300_24","DOIUrl":"10.4103/IJO.IJO_2300_24","url":null,"abstract":"<p><strong>Purpose: </strong>Assessment of peripapillary retinal nerve fiber layer (pRNFL) thickness, optic nerve head (ONH), and macular parameters using spectral domain optical coherence tomography (OCT) in migraine patients and comparison with age- and gender-matched healthy comparable patients.</p><p><strong>Methods: </strong>Patients diagnosed with migraines who fulfilled the inclusion criteria were included in the study. Healthy subjects without any ocular and systemic disorders constituted the control group. pRNFL thickness, ONH, and macular parameters were assessed using spectral domain OCT in all patients. The various study parameters were analyzed and compared between the two groups at the end of the study period. The migraine patients were also analyzed based on type, duration, and severity of migraine.</p><p><strong>Results: </strong>The study included 100 migraine patients and 100 age- and sex-matched healthy subjects. The mean age in migraine and control groups was 31.01 ± 8.56 and 30.80 ± 8.65 years, respectively. Females comprised 84% of the study subjects. Migraine patients had statistically significant (P < 0.05) thinner pRNFL and macular parameters compared to healthy subjects. Chronic migraine, severe migraine, and duration of more than 5 years were associated with statistically significant thinner pRNFL and macular parameters.</p><p><strong>Conclusion: </strong>Migraine patients have significantly thinner pRNFL and macular parameters than healthy patients, and this is especially so for patients with greater severity of migraine.</p>","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":"73 6","pages":"900-905"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178378/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144158260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comment on \"Brolucizumab-associated intraocular inflammation in Indian patients by VRSI study group\".","authors":"Sabyasachi Sengupta, Aditya Kelkar, Harsh H Jain","doi":"10.4103/IJO.IJO_2590_24","DOIUrl":"10.4103/IJO.IJO_2590_24","url":null,"abstract":"","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":"73 6","pages":"925-926"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178350/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144158278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Parvathy Prabhakaran, B C Pradeep, Akanksha D Pandit, Pradeep Sagar, A Varsha, Shubhra Sweta, Suchitra Biswal, H N Ravishankar
{"title":"Evaluation of anterior scleral thickness in eyes with central serous chorioretinopathy.","authors":"Parvathy Prabhakaran, B C Pradeep, Akanksha D Pandit, Pradeep Sagar, A Varsha, Shubhra Sweta, Suchitra Biswal, H N Ravishankar","doi":"10.4103/IJO.IJO_3116_24","DOIUrl":"10.4103/IJO.IJO_3116_24","url":null,"abstract":"<p><strong>Purpose: </strong>To compare the anterior scleral thickness in eyes with central serous chorioretinopathy (CSC) and healthy eyes.</p><p><strong>Design: </strong>Cross-sectional observational study.</p><p><strong>Methods: </strong>The study included patients with CSC and age and gender-matched healthy individuals. The subfoveal choroidal thickness (SFCT) and scleral thickness at 3 mm, 4 mm, and 8 mm posterior to the scleral spur were measured using swept source optical coherence tomography (Topcon DRI-OCT Triton plus).</p><p><strong>Results: </strong>The study included 35 eyes with CSC and 35 control eyes. In CSC group, 82.86% were simple and 17.14% were complex. There was no statistically significant difference in the scleral thickness in CSC and control groups. Though the sclera was thicker in the complex CSC group compared to simple CSC at 3 mm (nasal: 724.33 ± 180.53 vs 658.48 ± 57.63, temporal: 696.17 ± 212.91 vs 628.83 ± 107.7) and 4 mm (nasal: 656.67 ± 109.34 vs 621.62 ± 79.31, temporal: 640.17 ± 191.31 vs 616.48 ± 86.30), the difference was not statistically significant. A moderate negative correlation was noted between SFCT and scleral thickness at 8 mm (r -0.349) and 3 mm on the nasal side (r -0.388) in the control group. A moderate negative correlation was noted between SFCT and scleral thickness at 4 mm (r -0.377) and 3 mm (r -0.403) on the temporal side in CSC group.</p><p><strong>Conclusion: </strong>The anterior scleral thickness was similar in CSC and healthy eyes. As the study sample predominantly included simple CSC, the findings indicate that the anterior scleral thickness may not be involved in the pathogenesis of simple CSC.</p>","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":"73 6","pages":"833-836"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178366/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144158290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"OCT angiography in polycythemia vera.","authors":"Pradeep K Panigrahi","doi":"10.4103/IJO.IJO_2562_24","DOIUrl":"10.4103/IJO.IJO_2562_24","url":null,"abstract":"","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":"73 6","pages":"927"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178364/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144158325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ana Bárbara Dias Lopes Urzedo, Bruna Predabon, Kenzo Hokazono
{"title":"Visual loss and blurred optic discs.","authors":"Ana Bárbara Dias Lopes Urzedo, Bruna Predabon, Kenzo Hokazono","doi":"10.4103/IJO.IJO_2526_24","DOIUrl":"10.4103/IJO.IJO_2526_24","url":null,"abstract":"","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":"73 Suppl 3","pages":"S359-S360"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178422/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144181323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comments on: Clinicopathologic study of caruncular lesions.","authors":"Soham S Pal, Md Shahid Alam","doi":"10.4103/IJO.IJO_2419_24","DOIUrl":"10.4103/IJO.IJO_2419_24","url":null,"abstract":"","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":"73 Suppl 3","pages":"S524-S525"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178405/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144181427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Clinical profile and visual outcomes in ethambutol-induced toxic optic neuropathy.","authors":"Jenil Sheth, Virender Sachdeva, Ashima Goyal, Aditi Parikh, Rohan Nalawade, Hardik Nanavati, Ramesh Kekunnaya","doi":"10.4103/IJO.IJO_1807_24","DOIUrl":"10.4103/IJO.IJO_1807_24","url":null,"abstract":"<p><strong>Purpose: </strong>To characterize the severity of vision loss, dose-related adverse effects, and visual outcomes in ethambutol-induced toxic optic neuropathy (ETON) patients.</p><p><strong>Methods: </strong>A prospective observational study was conducted in a tertiary eye center in South India between July 2019 and December 2021. Consecutive adults (age >18 years) taking revised antitubercular regimens and diagnosed with ETON were included. Data collected regarding patient demographics, presentation, dose-related severity of vision loss, and visual outcomes after drug discontinuation were analyzed.</p><p><strong>Results: </strong>We analyzed 214 eyes from 107 patients (mean age: 51.1 ± 13 years; male: female ratio = 2:1). The median follow-up time was 11 months (interquartile range: 4-14 months). Mean visual acuity improved from 1.2 ± 0.6 log of minimum angle of resolution (logMAR) at presentation to 0.8 ± 0.6 logMAR at the final follow-up. Patients above 60 years old had the worst visual acuity at presentation and had the least improvement at the last follow-up compared to those in younger age groups (1.3-1.2 logMAR, P = 0.2). The mean exposure time to ethambutol was 6.8 ± 3.3 months, and the mean dose was 1042 ± 247 mg/day, that is, 16.7 ± 4 mg/kg/day. Mean presenting best corrected visual acuity (BCVA; 1.3 ± 0.6 logMAR) was worse in patients taking a higher dose of ethambutol (≥16 mg/kg) compared to those taking <16 mg/kg (mean BCVA: 1 ± 0.5 logMAR).</p><p><strong>Conclusion: </strong>Higher age and higher doses of ethambutol were associated with an increased risk of vision loss and worse vision at presentation. Prolonged exposure to high-dose ethambutol, as in fixed drug dose combinations, leads to severe visual impairment which might be partially reversible.</p>","PeriodicalId":13329,"journal":{"name":"Indian Journal of Ophthalmology","volume":"73 Suppl 3","pages":"S484-S491"},"PeriodicalIF":2.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12178413/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144181489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}