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Proceedings Paper

Endoscopic goniotomy: a potential surgical procedure for primary infantile glaucoma
Author(s): Karen Margaret Joos M.D.; Wallace L. M. Alward M.D.; Robert Folberg M.D.
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Paper Abstract

Goniotomy is an effective treatment for primary infantile glaucoma. Unlike trabeculotomy, goniotomy facilitates the visualization of the trabecular meshwork and does not disturb the conjunctiva. Because a cloudy cornea may prevent a clear view of the anterior chamber angle through the operating microscope, we investigated whether an endoscope would improve visualization during goniotomy in pig cadaver eyes. We deepened the anterior chamber of each pig eye with viscoelastic material. A modified 23-gauge needle attached to an Olympus 0.8 mm diameter flexible fiberoptic endoscope entered the anterior chamber through a 3 mm limbal incision. The angle was clearly seen on a videoscreen as the needle approached and incised the trabecular pillars for 120 degree(s); the iris immediately fell back. Following the procedure, the eyes were fixed in formalin and sectioned for light microscopy, or fixed in 2% glutaraldehyde for scanning electron microscopy. Trabecular pillars were present from the iris root to Schwalbe's line in the untreated region of the anterior chamber angle. The treated area demonstrated incision of the trabecular pillars with opening of the underlying trabecular meshwork.

Paper Details

Date Published: 24 June 1993
PDF: 5 pages
Proc. SPIE 1877, Ophthalmic Technologies III, (24 June 1993);
Show Author Affiliations
Karen Margaret Joos M.D., Univ. of Iowa Hospitals and Clinics (United States)
Wallace L. M. Alward M.D., Univ. of Iowa Hospitals and Clinics (United States)
Robert Folberg M.D., Univ. of Iowa Hospitals and Clinics (United States)

Published in SPIE Proceedings Vol. 1877:
Ophthalmic Technologies III
Jean-Marie A. Parel; Qiushi Ren, Editor(s)

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