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Junsuke Akura, MD; Shiro Hatta, MD; Syuzo Kaneda, MD; Kazuki Matsuura, MD; Akihiko Tamai, MD; Kazuaki Kadonosono, MD

Arch Ophthalmol. 2001;119:109-111.

A new type of knife that enables a surgeon to easily create tunnel-shaped incisions with a prescribed depth has been developed. The knife features an incision guide, the arm of which extends just beyond the tip of the blade. The space between the blade and the arm can be set at the desired width. By moving the knife as if sliding the arm across the corneal or scleral surface, the blade can move to a certain depth from the surface. The guided knife enables even novice surgeons to easily make a self-sealing incision during cataract surgery. In addition, the innovative nature of this device seems to be applicable to many other surgeries that require a partial-thickness incision.

From the Kushimoto Rehabilitation Center, Kushimoto (Drs Akura and Kaneda), the Department of Ophthalmology, Faculty of Medicine, Tottori University, Yonago (Drs Hatta, Matsuura, and Tamai), and the Department of Ophthalmology, Yokohama City University School of Medicine, Yokohama (Dr Kadonosono), Japan. None of the authors has a commercial or proprietary interest in the methods described in this article.