A current review on keratoconus

Keratoconus is a bilateral, non-inflammatory, usually asymmetric, and relatively less common corneal disorder where there is progressive thinning of central or paracentral cornea and irregular astigmatism owing to steepening of cornea leading to decreased visual acuity. Typically, it starts to manifest in the second and third decades of life and advances until 40 years of age. This condition is typically thought to have an unknown etiology, low prevalence, and affects all racial groups and both genders. An updated assessment of keratoconus description, epidemiology, pathophysiology, clinical manifestation, diagnosis, classification, and management approaches are included in this article.