To compare the Schirmer’s I test values and test time duration under two different (Dim and light) illumination and Correlation of test time duration with Schirmer’s I value and level of illumination. Method: 52 eyes in 26 patients, male (9) and female (17), age ranging between 18 to 20 years and free from ocular and systemic disease, were recruited for the research. The study was conducted in a controlled room, where temperature and humidity was constant. Illumination was measured using lux meter. With informed consent routine eye examination was performed. The Schirmer’s I test was performed, first in dark room illumination and then after half an hour the same test was performed in an illuminated room. and Correlation of test time duration with Schirmer’s I value and level of illumination

Keywords : Schirmer Tests; Illumination; Tear Break-Up Time; Tear Secretion.