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December 1970

Research Into the Pathogenesis of Keratoconus: A New Syndrome: Low Ocular Rigidity, Contact Lenses, and Keratoconus

Author Affiliations

St. Louis
From the Department of Ophthalmology and the Oscar Johnson Institute, Washington University School of Medicine, St. Louis.

Arch Ophthalmol. 1970;84(6):728-729. doi:10.1001/archopht.1970.00990040730005

Ocular rigidity determinations were carried out in three groups of patients who were successful long-term wearers of corneal contact lenses. Group 1 consisted of those patients whose corneas showed no refractive changes upon removal of the lenses (as compared to their precontact refraction). Group 2 were patients who had developed permanent with-the-rule astigmatism. Group 3 were patients who developed keratoconus. Though our series is too small for statistical analysis, it would appear that at least one type of keratoconus may be related to the long-term wearing of corneal contact lenses on eyes that have an unusually low ocular rigidity.

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