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

The Effect of Radial Keratotomy on Ocular Integrity in an Animal Model Abstract • 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. References 1. Reddy PS, Reddy PR: Anterior keratotomy . Ophthalmic Surg 1980;11:765-767. 2. Fyodorov SN, Durnev VV: Operation of dosaged dissection of corneal circular ligament in cases of myopia of mild degree . Ann Ophthalmol 1979;97:1885-1890. 3. Brown KT, Christensen JL, Duane TD, et al: Radial keratotomy . Am J Ophthalmol 1980;90:741-742. 4. Jester JV, Venet T, Lee JS, et al: A statistical analysis of radial keratotomy in human cadaver eyes . Am J Ophthalmol 1981;92:172-177. 5. Jester JV, Steel D, Salz J, et al: Radial keratotomy in nonhuman primate eyes . Am J Ophthalmol 1981;92:153-171. 6. Steel D, Jester JV, Salz J, et al: Modification of corneal curvature following radial keratotomy in primates . Ophthalmology 1981;88:747-754.Crossref 7. Salz J, Lee JS, Jester JV, et al: Radial keratotomy in fresh human cadaver eyes . Ophthalmology 1981;88:742-746.Crossref 8. Delor F, Pomerantzeff O, Cox MS: Deformation of the globe under high-speed impact: Its relation to contusion injuries . Invest Ophthalmol Vis Sci 1969;8(No. (3) ):290-301. 9. Prince JH: Anatomy and Histology of the Eye and Orbit in Domestic Animals . Springfield, Ill, Charles C Thomas Publisher, 1960, p 217. 10. Duke-Elder S: System of Ophthalmology . St Louis, CV Mosby Co, 1958, pp 198-210. 11. Duane TD: Clinical Ophthalmology: Trauma to the Sclera . Hagerstown, Md, Harper & Row Publishers Inc, 1980, pp 12-13. 12. Wolff E: Anatomy of the Eye and Orbit . Philadelphia, WB Saunders Co, 1976, pp 33-35,44, 48-49. 13. Hoffer KJ, Darin JJ, Pettit TH, et al: UCLA clinical trial of radial keratotomy: Preliminary report . Ophthalmology 1981;88:729-736.Crossref http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Ophthalmology American Medical Association

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

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Publisher
American Medical Association
Copyright
Copyright © 1982 American Medical Association. All Rights Reserved.
ISSN
0003-9950
eISSN
1538-3687
DOI
10.1001/archopht.1982.01030030321020
Publisher site
See Article on Publisher Site

Abstract

Abstract • 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. References 1. Reddy PS, Reddy PR: Anterior keratotomy . Ophthalmic Surg 1980;11:765-767. 2. Fyodorov SN, Durnev VV: Operation of dosaged dissection of corneal circular ligament in cases of myopia of mild degree . Ann Ophthalmol 1979;97:1885-1890. 3. Brown KT, Christensen JL, Duane TD, et al: Radial keratotomy . Am J Ophthalmol 1980;90:741-742. 4. Jester JV, Venet T, Lee JS, et al: A statistical analysis of radial keratotomy in human cadaver eyes . Am J Ophthalmol 1981;92:172-177. 5. Jester JV, Steel D, Salz J, et al: Radial keratotomy in nonhuman primate eyes . Am J Ophthalmol 1981;92:153-171. 6. Steel D, Jester JV, Salz J, et al: Modification of corneal curvature following radial keratotomy in primates . Ophthalmology 1981;88:747-754.Crossref 7. Salz J, Lee JS, Jester JV, et al: Radial keratotomy in fresh human cadaver eyes . Ophthalmology 1981;88:742-746.Crossref 8. Delor F, Pomerantzeff O, Cox MS: Deformation of the globe under high-speed impact: Its relation to contusion injuries . Invest Ophthalmol Vis Sci 1969;8(No. (3) ):290-301. 9. Prince JH: Anatomy and Histology of the Eye and Orbit in Domestic Animals . Springfield, Ill, Charles C Thomas Publisher, 1960, p 217. 10. Duke-Elder S: System of Ophthalmology . St Louis, CV Mosby Co, 1958, pp 198-210. 11. Duane TD: Clinical Ophthalmology: Trauma to the Sclera . Hagerstown, Md, Harper & Row Publishers Inc, 1980, pp 12-13. 12. Wolff E: Anatomy of the Eye and Orbit . Philadelphia, WB Saunders Co, 1976, pp 33-35,44, 48-49. 13. Hoffer KJ, Darin JJ, Pettit TH, et al: UCLA clinical trial of radial keratotomy: Preliminary report . Ophthalmology 1981;88:729-736.Crossref

Journal

Archives of OphthalmologyAmerican Medical Association

Published: Feb 1, 1982

References