Group Computer use on working day Chi Square=12.45,  P=0.001 Computer use on leisure day Chi Square=12.28,  P=0.001 <2 hrs (n=32) 2-6 hrs (n=112) 7-18hrs (n=22) <2 hrs (n=21) 2-6 hrs (n=89) 7-18hrs (n=56) With symptoms of dry eye (n=122) 24 (75.0%) 82 (73.2%) 16 (72.3%) 14 (70.0%) 69 (77.5%) 39 (69.6%) Without symptoms of  dry eye (n=44) 8 (25.0%) 30 (17.9%) 6 (27.3%) 7 (30.0%) 20 (22.5%) 17 (30.4%)

Table 1: Association of computer usage and symptom of dry eyes in 166 contact lens wearers.