Prevalence of different eye diseases excluding refractive errors presented at the outpatient clinic in Damnhour Eye Hospital

Abstract

Epidemiological studies provide information on the prevention, treatment, and minimization of the impact of diseases on society. A wide range of epidemiologic studies in ophthalmology have provided important information on the pattern of visual impairment and the major eye diseases that cause vision loss. The data published by the World Health Organization (WHO) showed that the total number of persons with visual impairment worldwide in 2010 was estimated to be 285 million, including 39 million blind people, of whom around 80 per cent are above age of 50, with most of the causes being preventable. The WHO defined Africa region has 26 million people with visual impairment of whom 6 million are blind. Several cross-sectional surveys have been undertaken across Africa to estimate prevalence and causes of blindness. Whilst this information has been vital in planning services and provision of healthcare. Cataract is the leading cause of blindness worldwide. It is a clouding of the lens in the eye which leads