Aim: To study the prevalence of uncorrected low grade astigmatism as the sole cause of headache.
Materials and Methods: It is a prospective cross sectional study, conducted in the Department of Ophthalmology for 18 months. A total of 400 patients presenting with headache as the single complaint were enrolled in the study. All the patients were evaluated for presence of astigmatism with the help of visual acuity, retinoscopy, keratometry and post mydriatic test and then the follow up was done at 4, 8 and 12 week to see the status of headache.
Results: The prevalence of uncorrected astigmatism among cases presenting with headache as the single complaint was 49.3%. Age of patients ranged from 14 to 35 years with a mean age of 22.85+6.43 years, however, proportion of patients with age