{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T04:08:19Z","timestamp":1790136499372,"version":"4.0.1"},"reference-count":21,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2023,8,1]],"date-time":"2023-08-01T00:00:00Z","timestamp":1690848000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Health Science Reports"],"published-print":{"date-parts":[[2023,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background and Aims<\/jats:title><jats:p>Induced prismatic effects due to poor fitting spectacle frames is a common problem, seen in most of the spectacle wearers and this improper fitting is often due to optical center demarcation on lenses and this error causes asthenopic symptoms and diplopia. However, these errors are most common in developing countries due to lack of awareness, hence a standardized regulation is required. The current study aimed to estimate the amount of prismatic effect that is induced due to the decentration of an optical center in ophthalmic lens.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A quantitative cross\u2010sectional study was conducted in single vision spectacle wearers (<jats:italic>N<\/jats:italic>\u2009=\u2009120) with a mean age of 25\u2009\u00b1\u20095 years. The pupillometric evaluation was performed to mark the pupil center on the spectacle lens. A lensometry evaluation was done to mark the optic center of the spectacle lens. A comparison was made to note whether the optic center is aligned with pupillary center. Objective assessment was performed through Prentice's rule (P\u2009=\u2009cF) and subjective symptoms were assessed through a validated visual comfort questionnaire.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In this sample, around 57% of the individual with single vision glasses were not looking through the optic center and experiencing induced prismatic effect of \u22120.7 to 0.6 prism diopter, with mean decentration of 3.5\u2009mm. Forty percent of the individuals with misaligned optic center showed asthenopic symptoms and visual discomfort.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Optometrist should check quality of dispensing and visual performance before handing over the newly dispensed glasses to the patients.<\/jats:p><\/jats:sec>","DOI":"10.1002\/hsr2.1472","type":"journal-article","created":{"date-parts":[[2023,8,2]],"date-time":"2023-08-02T04:44:14Z","timestamp":1690951454000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Influence of prismatic effect due to decentration of optical center in ophthalmic lens"],"prefix":"10.1002","volume":"6","author":[{"given":"Vijay Sandeep Kumar","family":"Madrolu","sequence":"first","affiliation":[{"name":"School of Medical Sciences University of Hyderabad Hyderabad India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5872-4990","authenticated-orcid":false,"given":"Shiva Ram","family":"Male","sequence":"additional","affiliation":[{"name":"School of Medical Sciences University of Hyderabad Hyderabad India"},{"name":"Schepens Eye Research Institute\u2010MEEI, Department of Ophthalmology Harvard Medical School Boston Massachusetts USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rishi","family":"Bhardwaj","sequence":"additional","affiliation":[{"name":"School of Medical Sciences University of Hyderabad Hyderabad India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5788-3735","authenticated-orcid":false,"given":"Baskar","family":"Theagarayan","sequence":"additional","affiliation":[{"name":"Centre for Vision across the Life Span, School of Applied Sciences University of Huddersfield Huddersfield 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