Table 1

 Prevalence of grey crescent by age, sex, for right eyes

Age/yearsNumber at riskPrevalence (n)% Prevalence (95% CI)
Males
50–591642415% (9 to 20)
60–691422417% (11 to 23)
70–791302519% (12 to 26)
80+31826% (9 to 42)
Total4678117% (14 to 21)
Females
50–591874524% (18 to 30)
60–692056230% (24 to 37)
70–791132219% (12 to 27)
80+401640% (24 to 56)
Total54514527% (23 to 30)
Sexes combined
50–593516920% (15 to 24)
60–693478625% (20 to 29)
70–792434719% (14 to 24)
80+712434% (23 to 45)
Total101222622% (20 to 25)