A Hospital Based Study of Pterygium in Tertiary Care Hospital of Nepal.

: Background Pterygium, a triangular fibrovascular subepithelial growth of degenerative bulbar conjunctival tissue over the limbus onto the cornea, is one of the common ocular conditions that may result in discomfort, tearing, photophobia and significant visual impairment. Little is known about its epidemiology in Nepalese context. Objective The current study aims to analyze the epidemiology of pterygium in a hospital-based population in Kavre District, a mid hilly region of central Nepal. Method This was a prospective hospital based study carried out in the Department of Ophthalmology in Dhulikhel Hospital, Kathmandu University Hospital for a period of one year from January to December 2013. All the patients with pterygium, aged 21 years and above attending the outpatients department were included into the study. The epidemiological data was collected using a standard questionnaire and complete ocular examination was performed by the Ophthalmologist. Result A total of 7925 patients were seen in the Ophthalmology outpatient department during a one year period, out of which 5622 patients (age range 20-80 years) were eligible for the study. A total of 137 patients, 43(31.4%) males and 94 females (68.6%) had different grades of pterygium with mean age of 48.6± 12.8 years. The overall prevalence of pterygium was 2.4 %. Majority of the patients with pterygium were between 41-60 years. Fifty-eight percent of pterygium were of grade I followed by 41% of grade II. Unilateral and nasal pterygia were common. Conclusion The prevalence of pterygium is low in this hospital based population, majority of cases affecting females and old age population.