Commercially available rigid gas-permeable contact lens for protecting the cornea from drying during vitrectomy with a wide viewing system
Authors Kamei M, Matsumura N, Sakaguchi H, Oshima, Ikuno Y, Nishida K
Received 4 May 2012
Accepted for publication 29 May 2012
Published 14 August 2012 Volume 2012:6 Pages 1321—1324
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 3
Motohiro Kamei, Nagakazu Matsumura, Hirokazu Sakaguchi, Yusuke Oshima, Yasushi Ikuno, Kohji Nishida
Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan
Purpose: We evaluated the usefulness of commercially available materials for protecting the cornea from drying during vitrectomy with a wide-angle viewing system.
Methods: Three vitreoretinal surgeons evaluated fundus visibility during vitrectomy on the images of five study materials used on the cornea: balanced saline solution, a viscoelastic agent, a vitrectomy contact lens, a rigid gas permeable (RGP) contact lens, and a soft contact lens. Fundus visibility was graded using the following scale: grade 1, unclear; grade 2, slightly unclear; grade 3, clear; and grade 4, very clear.
Results: Respective scores for each material used during core vitrectomy and membrane removal were: balanced saline solution, 3.3/3.3; viscoelastic agent, 3.8/3.3; vitrectomy contact lens, 3.3/4.0; RGP contact lens, 4.0/3.9; soft contact lens, 1.1/not applicable.
Conclusion: The RGP contact lens provided visibility similar to or clearer than that obtained with other methods. Because of its ease of use and lower cost, use of the RGP contact lens is ideal during vitrectomy performed with a wide-angle viewing system.
Keywords: contact lens, RGP, viscoelastic agent, vitrectomy, wide viewing system
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