Adaptation du kératocone en lentilles de contact avec systéme piggyback

Abstract

Keratoconus is an idiopathic corneal dystrophy characterized by ectasia and progressive non-inflammatory thinning of the cornea. This deformation, which usually occurs at the end of adolescence, is subsequently accompanied by important deterioration in vision. For the correction of induced irregular astigmatism, contact lenses remain the gold-standard, in particular rigid contact lenses, their rigidity makes it possible to create a corrective tear meniscus and their particular geometry allows optimal correction to patients with keratoconus. Wearing rigid lenses is still restrictive with regard to comfort, often the patient abandons wearing the latter because of pain, contactological solutions are available including the Piggyback system, which consists of using an assembly of two lenses, flexible and rigid, to guarantee optimal comfort with the flexible lens and vision correction with the rigid lens.