Abstract:
PURPOSE:The etiology of keratoconus has been the subject of numerous studies. Here, we review the body of literature that attempts to determine what causes keratoconus. METHODS:A review of the published literature was performed to evaluate the possible causes of keratoconus and how the different etiologies may play a role in the development of this disease. RESULTS:Peer-reviewed published papers and recent abstracts concerning the different etiologies of keratoconus were reviewed and discussed. Biochemical, genetic, and environmental factors are reviewed. The role of eye rubbing and atopic disease are explored. CONCLUSIONS:We agree with the hypothesis that there is a genetic predisposition that requires a "second hit" or environmental event to elicit progressive disease in keratoconus. Eye rubbing may serve as the "second hit" in some predisposed individuals. Inflammatory mediator studies question if keratoconus is really a noninflammatory thinning disorder of the cornea.
journal_name
Corneajournal_title
Corneaauthors
Sugar J,Macsai MSdoi
10.1097/ICO.0b013e31823f8c72subject
Has Abstractpub_date
2012-06-01 00:00:00pages
716-9issue
6eissn
0277-3740issn
1536-4798journal_volume
31pub_type
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