Refractive Error in Nigerian Adults: Prevalence, Type, and Spectacle Coverage

Abstract

Uncorrected refractive errors are an important cause of visual impairment in Nigeria, and services must be dramatically improved to meet the need.

How Much Eye Care Services Do Asian Populations Need? Projection from the Singapore Epidemiology of Eye Disease (SEED) Study

“…23 the ''unmet needs'' for RS and CSS, as well as spectacle coverage and cataract surgical coverage. The spectacle coverage rates (based on the ''better-seeing eye'' definition) in our cohort (42.7%-65.5%) were slightly lower than reported in Taiwan (71.2%), 28 but higher than reported in many developing countries (e.g., 3.4% in Nigeria, 29 3.0% in Bangladesh, 30 6.2% in Pakistan, 31 and 17.4% in India 32 ). Likewise, our cataract surgical coverage rates (34.5%-63.4%) were slightly lower than reported in Latinos in the United States (65.7%), 33 but generally higher than reported in developing regions (well below 50%).…”

Visual Function after Correction of Distance Refractive Error with Ready-made and Custom Spectacles: A Randomized Clinical Trial

“…24,25 Additionally, a recent review of global epidemiologic studies found rates ranging from 15.8 to 48.9% for astigmatism greater than 0.5 to 1.0 diopters. 33 In our study population, approximately 12% had astigmatism greater than 2.00 diopters, and this group had smaller gains in reported vision function and quality of life at follow-up, controlling for demographic and vision-related characteristics. Subgroup analyses show that there clearly are some who would be best served with custom spectacles.…”

Characteristics of Refractive Errors in a Population of Adults in the Central Region of Poland

“…Beijing or Taiwan and in studies from Nigeria, Bangladesh and Argentina [9,16,17,20,33,34,35]. All these studies were population based and not hospital based.…”