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New type of antidrying lens for vitreous surgery with a noncontact wide-angle viewing system

Authors Chihara T, Kita M

Received 6 January 2013

Accepted for publication 24 January 2013

Published 15 February 2013 Volume 2013:7 Pages 353—355

DOI https://doi.org/10.2147/OPTH.S42443

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Tomoyuki Chihara,1 Mihori Kita2

1Department of Ophthalmology, Hyogo Prefectural Amagasaki Hospital, Hyogo, 2Department of Ophthalmology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan

Abstract: Drying of the cornea during surgery, which causes poor visibility of the fundus, is one of the more serious problems when using a noncontact type wide-angle viewing system. We developed an antidrying corneal contact lens for use with this type of viewing system. The lens has a very thin meniscus made of polymethyl methacrylate with a large outer diameter. Following application of the viscoelastic material, the lens can be put on the cornea without using a contact lens fixation ring. The larger diameter and lightweight characteristics of our lens contributed to its overall stability. The smooth surface of this prototype lens was able to achieve an intraoperative view of good quality, not only by preventing the cornea from drying, but also by providing a smooth surface over the entire cornea.

Keywords: vitrectomy, wide-angle viewing system, contact lens

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