Refractive errors, especially myopia, have been more common in recent years and are continuing to rise internationally. Information on the causes of vision decline provide a solid foundation for recommendations in public health policy, such as national budgeting and health-care planning, as well as scientific research. Objective: Our aim is to assess the relation between Visual acuity and time of studying on electronic devices among deferent academic level of the medical student. This study will be cross-sectional. The target population is medical students' males and females in Riyadh, KSA with a total sample of 253. Methods: A cross-sectional design was conducted; the study was based on a visual acuity examination and questionnaire that is prepared especially for it. The data was cleared, coded and entered by using (SPSS). Result: The study included 253 medical students who completed the visual examination and the study questionnaire in which 53.8 %were female and 46.2% were males mean age of participants was 22 years. We found that 32.42% of participant had 6/6 of visual acuity. Conclusion: The study concludes that there is association between visual acuity and the time spent on studying using electronic devices.
Keywords: Visual acuity, medical students, electronic devices, study, academic level