Background: Myopia is one of the leading causes of vision loss around the world .Various studies from different parts of the world show a dramatic increase in refractive error, especially myopia among school and college students. Higher levels of education like medical education have been repeatedly associated with greater myopia prevalence. Objective: To study the prevalence and the underlying factors of myopia in BDS students of a Dental College in Kerala. Research methodology: Eighty nine BDS students (2012 - 2012 batches) were examined. Students were selected from each class by systematic random sampling technique, their visual acuity was checked using Snellen__ampersandsignrsquo;s Chart and Diopters were obtained. Details of factors were obtained using a questionnaire. Results: Prevalence of myopia was observed as 40.4%. First and second year students had a greater percentage of myopia with 46.4 % and 56.7% respectively. There was a strong relationship with years after diagnosing myopia which indicates that majority of them developed it in less than 5 years (p=0.000). Siblings of most of myopics also had myopia (p=0.002). Sleeping habits showed a significant relationship with myopia (0.037). Duration of TV watching, duration of computer use, Reading hours, type of light used and playing or texting with cell phone were not significant. Conclusion: Prevalence of myopia was high among dental students (40.4%).