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Objectives: To study the Effect of different factors associated with TV watching on vision in school children (6-15 years). Study Design: Cross-sectional. Setting: Govt. Senior Secondary Schools of Block Lakhanmajra. Participants: 1265 school children (6-15 years). Methodology: Out of 16 Govt. Senior Secondary Schools, 4 were randomly chosen. Students aged 6-15 years studying in class 1 to 10 were included in the study. Visual Acuity (VA) test was performed using Snellen's E chart and an interview was done on the basis of questionnaire. The findings of clinical examination were recorded on a pre-tested Performa and were analyzed. Statistical Analysis: percentages, Chi-square test. Result: Out of 1265, 93 students did not watch TV. Out of the remaining 1172, 161 students (13.7 %) had defective vision. Out of 109 students (9.3 %) who watched TV in darkness, 24 students (22%) had defective vision. Out of 129 students (11 %) who watched TV from a distance of less then 5 feet, 27 students (20.9 %) had defective vision. Out of 914 students (78%) who watched TV from a distance 5-10 feet, 113 students (12.4 %) had defective vision and out of 129 students (11%) who watched TV from a distance >10 feet, 21 students (16.3%) had defective vision. Prevalence of defective vision was more in cases of longer duration of TV watching, Conclusion: Distance, duration and environment of television watching may be responsible for impairing a child's visual development. Defective vision can have a long term impact on the learning abilities of school children. TV rots the senses in the head! It kills the imagination dead! It clogs and clutters up the mind! It makes a child so dull and blind. He can no longer understand a fantasy, A fairyland! His brain becomes as soft as cheese! His powers of thinking rust and freeze! An excerpt from Charlie and the Chocolate Factory, By Roald Dahl, 1964 1