title: An epidemiological study of refractive errors among college students in Calcutta.
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D009216:Myopia / Q000453:epidemiology; D012030:Refractive Errors / Q000453:epidemiology*; D013334:Students; D014495:Universities; D014786:Vision Disorders / Q000453:epidemiology; D014792:Visual Acuity