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Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria

The prevalence and nature of corneal astigmatism among patients with cataract has not been well-documented in the resident African population. This retrospective study was undertaken to investigate preexisting corneal astigmatism in adult patients with cataract. We analyzed keratometric readings acq...

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Autores principales: Isyaku, Mohammed, Ali, Syed A, Hassan, Sadiq
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4290202/
https://www.ncbi.nlm.nih.gov/pubmed/25494254
http://dx.doi.org/10.4103/0301-4738.146751
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author Isyaku, Mohammed
Ali, Syed A
Hassan, Sadiq
author_facet Isyaku, Mohammed
Ali, Syed A
Hassan, Sadiq
author_sort Isyaku, Mohammed
collection PubMed
description The prevalence and nature of corneal astigmatism among patients with cataract has not been well-documented in the resident African population. This retrospective study was undertaken to investigate preexisting corneal astigmatism in adult patients with cataract. We analyzed keratometric readings acquired by manual Javal-Schiotz keratometry before surgery between January 1, 2011 and December 31, 2011. There were 3,169 patients (3286 eyes) aged between 16 and 110 years involved with a Male to female ratio of 1.4:1. Mean keratometry in diopters was K1 = 43.99 and K2 = 43.80. Mean corneal astigmatism was 1.16 diopter and a majority (45.92%) of eyes had astigmatism between 1.00 and 1.99 diopters. Two-thirds of the eyes (66.9%) in this study had preoperative corneal astigmatism equal to or above 1.00 diopter. Findings will help local cataract surgeons to estimate the potential demand for toric intraocular lenses.
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spelling pubmed-42902022015-01-15 Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria Isyaku, Mohammed Ali, Syed A Hassan, Sadiq Indian J Ophthalmol Brief Communications The prevalence and nature of corneal astigmatism among patients with cataract has not been well-documented in the resident African population. This retrospective study was undertaken to investigate preexisting corneal astigmatism in adult patients with cataract. We analyzed keratometric readings acquired by manual Javal-Schiotz keratometry before surgery between January 1, 2011 and December 31, 2011. There were 3,169 patients (3286 eyes) aged between 16 and 110 years involved with a Male to female ratio of 1.4:1. Mean keratometry in diopters was K1 = 43.99 and K2 = 43.80. Mean corneal astigmatism was 1.16 diopter and a majority (45.92%) of eyes had astigmatism between 1.00 and 1.99 diopters. Two-thirds of the eyes (66.9%) in this study had preoperative corneal astigmatism equal to or above 1.00 diopter. Findings will help local cataract surgeons to estimate the potential demand for toric intraocular lenses. Medknow Publications & Media Pvt Ltd 2014-11 /pmc/articles/PMC4290202/ /pubmed/25494254 http://dx.doi.org/10.4103/0301-4738.146751 Text en Copyright: © Indian Journal of Ophthalmology http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Brief Communications
Isyaku, Mohammed
Ali, Syed A
Hassan, Sadiq
Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria
title Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria
title_full Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria
title_fullStr Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria
title_full_unstemmed Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria
title_short Preoperative corneal astigmatism among adult patients with cataract in Northern Nigeria
title_sort preoperative corneal astigmatism among adult patients with cataract in northern nigeria
topic Brief Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4290202/
https://www.ncbi.nlm.nih.gov/pubmed/25494254
http://dx.doi.org/10.4103/0301-4738.146751
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