Blindness prevalence rates in Egypt.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001766:Blindness / Q000453:epidemiology*; D002648:Child; D004534:Egypt; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D012042:Registries; D012424:Rural Population; D012494:Sampling Studies; D012737:Sex Factors; D013223:Statistics as Topic; D014505:Urban Population; D014787:Vision Tests