Cataract prevalence and magnitude.
Cataract blindness prevalence.
Csc was 41 5 in cataract blind eyes and 48 6 in cataract blind people.
Prevalence rates ranged from 2 8 in proyecto ver to 29 5 in ucla mec.
Aao outlines the breakdown of legal blindness associated with eye disorders and diseases according to ethnic group.
Cataract was the leading cause of blindness 79 4.
The pooled prevalence rate of cataract blindness including post surgical cases by best corrected visual acuity bcva 0 05 among middle aged and older chinese was 2 30 95 ci 1 72 3 07 and.
The prevalence of cataract blindness was higher in punjab province in rural areas and among illiterate participants.
Blindness was more prevalent in the older age group and in women.
Assuming an examination response rate of 85 and a design effect of 2 0 to account for the cluster sampling design a sample size of 4514 persons 50 years of age is required.
A total of 289 participants were blind with cataract as the cause crude prevalence 1 75 95 ci 1 55 to 1 96 table 1 1.
Figure 1 below shows the estimated prevalence rate for cataract from the seven studies reviewed in this section.
Sample size was calculated on the basis of estimating a blindness prevalence of 8 with an error bound precision of 15 with 95 confidence.