New sutureless contact lens ring system for vitrectomy using cannula system.

摘要

Although wide-viewing systems are commonly used during vitrectomy, conventional floating contact lenses are still used especially during macular surgery because they provide a clearer view and better stereoscopic images. Two types of lens ring systems are used with the planoconcave floating lens during vitrectomy; one is the conventional lens ring sutured to the sclera, and the other is a sutureless contact lens ring system. Although the former provides secure fixation of the ring to the eye, the suturing procedure is time consuming and bleeding frequently occurs. In addition, with the spread of transconjunctival sutureless vitrectomy using 25-gauge or 23-gauge instruments, the development of a lens ring system that can preserve the conjunctiva with easier fixation procedures would be desired.