Racial differences in the prevalence of corneal arcus.
D000328:Adult; D000367:Age Factors; D044383:Black People; D002980:Climate; D003318:Corneal Opacity / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D005260:Female; D005843:Geography; D006801:Humans; D006973:Hypertension / Q000150:complications; D007498:Iris / Q000473:pathology; D008297:Male; D008875:Middle Aged; D044469:Racial Groups; D012494:Sampling Studies; D012737:Sex Factors; D013472:Sunlight; D044465:White People