{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T23:44:57Z","timestamp":1780530297642,"version":"3.54.1"},"reference-count":28,"publisher":"BMJ","issue":"7","license":[{"start":{"date-parts":[[2023,9,6]],"date-time":"2023-09-06T00:00:00Z","timestamp":1693958400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"SightFirst Initiative of Lions Clubs International and Seva Foundation","award":["SF1944\/UND"],"award-info":[{"award-number":["SF1944\/UND"]}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["Br J Ophthalmol"],"accepted":{"date-parts":[[2023,7,29]]},"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:sec>\n<jats:title>Background\/aims<\/jats:title>\n<jats:p>To estimate the annual cataract surgery workload in Theni district, Tamil Nadu, India based on current utilisation of cataract services, prevalence of blindness and vision impairment (VI), and cataract burden-reduction goals.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>We conducted a population-based longitudinal study between January 2016 and April 2018. We recruited 24\u2009327 participants based on a random cluster sampling method; 7127 participants were \u226540 years. During the year following initial enrolment, we tracked utilisation of eye care services; and at the end of the 1-year period, we conducted a detailed eye examination of participants age \u226540.<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>\nIn the sample age \u226540 years, 13.0% had a visually significant cataract, and 17.8% had prior cataract surgery in at least one eye. The prevalence of cataract blindness based on presenting visual acuity in the better eye (PVA\n<jats:sub>BE<\/jats:sub>\n)&lt;3\/60 was 0.34% and VI (PVA\n<jats:sub>BE<\/jats:sub>\n&lt;6\/12) was 9.92%. 3.10% of the study population had obtained cataract surgery during 1\u2009year, resulting in a cataract surgical rate of 9085. We estimated the effective cataract surgical coverage (eCSC) to be 54.5% and the CSC to be 75.7%, implying a sizeable quality gap. Prevalence, utilisation and coverage varied by age and gender. We estimated that a goal of eliminating the backlog of VI (PVA\n<jats:sub>BE<\/jats:sub>\n&lt;6\/12) in 5\u2009years would increase the annual cataract surgery workload by 11.5% from the current level.\n<\/jats:p>\n<\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>Our estimates of cataract surgery workloads under different scenarios can provide a useful input into planning of eye health services in Theni district.<\/jats:p>\n<\/jats:sec>","DOI":"10.1136\/bjo-2023-323182","type":"journal-article","created":{"date-parts":[[2023,9,6]],"date-time":"2023-09-06T17:20:34Z","timestamp":1694020834000},"page":"915-920","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":7,"title":["Cataract surgery workload estimates in Theni district, India"],"prefix":"10.1136","volume":"108","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9459-5233","authenticated-orcid":false,"given":"Sachin","family":"Gupta","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ashok","family":"Vardhan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Viraj","family":"Ambalam","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9161-5198","authenticated-orcid":false,"given":"Vinothkumar","family":"Rajendran","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8467-5544","authenticated-orcid":false,"given":"Sanil","family":"Joseph","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1935-7443","authenticated-orcid":false,"given":"Thulasiraj 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