Cataract Blindness Prevalence

Cataract was the leading cause of blindness 79 4.

Cataract blindness prevalence.

Good visual outcome in the cataract operated eyes was 62 presenting and 75 2 best corrected. Prevalence rates ranged from 2 8 in proyecto ver to 29 5 in ucla mec. 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. Aao outlines the breakdown of legal blindness associated with eye disorders and diseases according to ethnic group.

Figure 1 below shows the estimated prevalence rate for cataract from the seven studies reviewed in this section. 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. Cataract prevalence and magnitude. 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. 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. 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.