Stability of the precorneal tear film in Chinese, African, Indian, and Caucasian eyes.
The stability of the precorneal tear film was measured noninvasively in normal subjects from four diverse ethnic groups (Chinese, Africans, Indians, and Caucasians) all resident in the west of Scotland. Statistically significant differences were found to exist among the groups. The respective mean ( +/- SD) tear stabilities were: 9.8 s (3.9), 11.8 s (5.9), 16.4 s (6.9), and 19.9 s (8.3). Subjects were selected from an age range of 17 to 45 years.
Patel
S
S
Department of Vision Science, Glasgow Caledonian University, Scotland, UK.
Virhia
S K
SK
Farrell
P
P
D000293:Adolescent; D000328:Adult; D003315:Cornea / Q000502:physiology*; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D013666:Tears / Q000502:physiology*