Keratoconus
Introduction: Keratoconus is a degenerative non-inflammatory disease of the cornea. It presents generally at puberty with progressive corneal steepening & thinning, most typically inferior to the center of the cornea. Keratoconus is characterized by progressive Myopia, both regular and irregular astigmatism in mild cases and vision compromising ectasia in advanced disease. It is usually bilateral and asymmetrical. The incidence of keratoconus is 1 in 2000. Patients often present with complaints of distorted, blurred vision, glare, light sensitivity and history of frequent change of glasses. PATHOGENESIS: Despite extensive research the etiology and exact pathogenesis of keratoconus is still not clearly established. It has been associated with atopic disease and chronic eye rubbing like in patients with Down’s Syndrome & Atopic dermatitis. There has been a possibility of genetic and hereditary disposition. It has been associated with systemic diseases like the Ehler-Danlos syndrome, oste

