Cataract Blindness Prevalence

Cataract prevalence and magnitude.

Cataract blindness prevalence.

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. Cataracts cause legal blindness in 10 3 percent of non hispanic whites 25 percent of african americans and 7 9 percent of hispanics who are legally blind. 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. Cataract was the leading cause of blindness 79 4.

The high degree of variation among the results in this figure is likely due to in part to methodological disease definition and population differences among the studies. Prevalence rates ranged from 2 8 in proyecto ver to 29 5 in ucla mec. Figure 1 below shows the estimated prevalence rate for cataract from the seven studies reviewed in this section. Aao outlines the breakdown of legal blindness associated with eye disorders and diseases according to ethnic group.

Csc was 41 5 in cataract blind eyes and 48 6 in cataract blind people. The prevalence of cataract blindness was higher in punjab province in rural areas and among illiterate participants. 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.