Keratoconus, the most common primary corneal ectasia, is a bilateral asymmetric corneal degeneration which accompanies with local corneal thinning and occurs mostly in inferior and central part of the cornea. Initiating in puberty, Keratoconus (KCN) often progresses until fourth decade of life.
Affecting all ethnic groups equally, KCN usually causes high myopia and irregular astigmatism which results in poor quality of vision. Based on disease severity, many treatment modalities exist including glasses and contact lenses for mild to moderate disease while corneal graft preserved for more advanced disease. High costs, need to long follow-ups, long periods for visual rehabilitation, risks of graft rejection or infection, wound dehiscence and suture-related problems make corneal grafts preserved for the last therapeutic choice by many ophthalmologists.
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