Contact lens care and disease characteristics in keratoconus

Keratoconus is a noninfalmmatory, progressive corneal disorder characterized by localized conical protrusion, apical thinning, irregular astigmatism, and central corneal scarring. These changes in cornea often lead to some unique clinical symptoms and signs which usuallycan't be seen in normal eyes. Contact lens care of keratoconus is more challenging than care of normal eyes because the need for special diagnostic trial lenses, experienced clinician and more professional chair time.In this article, we will focus on how to diagnose Keratoconus based on its disease characteristics and the complexity of contact lens care for it. The model of 3 point touch lens fittingwill also be discussed in detail.