Kératocône

Keratoconus refers to a corneal dystrophy appearing as a non-inflammatory protrusion of the cornea in its axial area; such protrusion occurs generally during adolescence and it progresses slowly. As a result, visual acuteness decreases in relation with important irregular astigmatism and frequent corneal opacities. The histological lesion is predominant on the Bowman's membrane and on the corneal stroma; the exact pathogenesis remains unclear. Some types, weakly progressive, have been identified when corneotopographic investigation techniques were developed; they should be detected prior to any refractive surgery. First-line therapy consists of an optical treatment based on contactology, then surgery is considered; transfixiant keratoplasty is no longer the systematically undertaken intervention.