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(Investigative Ophthalmology and Visual Science. 1971;10:367-372.)
© 1971 by The Association for Research in Vision and Ophthalmology, Inc.

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Capsulovitreotomy: A Technique for Intracapsular Lens Extraction in Cats

STEVEN G. KRAMER 1, JOHN J. WEITER 1, and TIBOR G. FARKAS 1

1 Department of Ophthalmology, University of Chicago Hospitals and Clinics, Chicago, Ill.

Successful intracapsular lens extraction has been performed in the cat. This animal has a strong hyaloideocapsular attachment, a flaccid sclera, and a zonule which is highly resistant to alpha-chymotrypsin. Because of these characteristics, intracapsular lens extraction in cats is not possible by conventional methods. Using osmotic agents, cryoextraction, and surgical microscopy, we have performed direct, sharp dissection of the zonule and the hyaloideo-capsular attachment (zonulotomy and capsulovitreotomy) in 28 cat eyes. Complete intracapsular extraction without vitreous loss was accomplished in 24 of these, including the last 14 consecutive cases. When complications arose, they occurred during zonulotomy rather than capsulovitreotomy.

Key Words: intracapsular lens extraction • cat • ligament of Wieger • capsule • vitreous • cryoextraction • microsurgery

Submitted on January 29, 1971
Accepted on March 26, 1971






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