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February 1982

The Effect of Radial Keratotomy on Ocular Integrity in an Animal Model

Author Affiliations

From the Department of Ophthalmology, University of Southern California and the Estelle Doheny Eye Foundation, Los Angeles.

Arch Ophthalmol. 1982;100(2):319-320. doi:10.1001/archopht.1982.01030030321020

• The safety of deep corneal incisions in radial keratotomy was evaluated in a porcine model of blunt trauma. One eye of each enucleated pair (right and left) of porcine eyes was subjected to a variation of radial keratotomy; the fellow eyes served as unoperated-on controls. All eyes were subjected to a standard injury. Control eyes ruptured at the equatorial sclera. Eyes with radial incisions cut through approximately 70% of corneal thickness also ruptured at the equator. When incisions of this depth (70%) were extended across the limbus (rather than to the corneal-scleral junction), all ruptures occurred at the limbal incisions. Eyes cut 95% to 100% of corneal thickness tended to rupture at the incisions. The safety of deep radial keratotomy incisions with respect to ocular integrity is discussed.

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