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A new lens for observing fundus with a noncontact wide-angle viewing system

Authors Kita M, Fujii Y, Hama S

Received 17 March 2017

Accepted for publication 12 June 2017

Published 3 July 2017 Volume 2017:11 Pages 1239—1244

DOI https://doi.org/10.2147/OPTH.S137346

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Lucy Goodman

Peer reviewer comments 2

Editor who approved publication: Dr Scott Fraser

Mihori Kita, Yukiko Fujii, Sachiyo Hama

Department of Ophthalmology, National Organization Kyoto Medical Center, Kyoto, Japan

Abstract: Drying of the cornea during surgery, which causes poor visibility of the fundus, is one of the most serious problems when using a noncontact-type wide-angle viewing system. This study used a newly commercialized lens for observing the fundus with a noncontact wide-angle viewing system. The lens used has a very thin meniscus made of polymethyl methacrylate and a large outer diameter. Following the application of viscoelastic material, the lens can be put on the cornea without using a contact lens fixation ring. The larger diameter and lightweight characteristics of the new lens contributed to the overall stabilization. The smooth surface of this lens was able to achieve an intraoperative view of good quality not only during vitrectomy but also during scleral buckling procedures.

Keywords: contact lens, observing fundus, vitrectomy, scleral buckling, noncontact wide-angle viewing system

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