Hitani Koichiro, Futamura Hideyuki, Shiba Tomoaki, Hori Yuichi, Saishin Yoshitsugu, Maeno Takatoshi
Toho University Sakura Medical Center, Sakura, Chiba, Japan.
Ophthalmic Surg Lasers Imaging. 2011 Nov-Dec;42(6):523-5. doi: 10.3928/15428877-20111017-02.
The authors report a new biconcave contact lens capable of providing superior surgical views of eyes during vitrectomy and intraocular lens implantation under both fluid-filled and air-filled conditions. The new biconcave lens is made of a glass with a high refractive index (nd = 1.883). The lens is placed on the cornea using a regular lens ring for the floating vitrectomy lens system. During vitrectomy, the new biconcave lens provides a view as clear as that of the commercially available flat-concave lens when the vitreous cavity is filled with fluid. The lens also provides a more magnified view than the commercially sold biconcave lens during fluid-air exchange, with no need for replacement. The new biconcave vitrectomy lens spares the surgeon the trouble of replacing different refractive lenses during the fluid-air exchange procedure in an eye undergoing intraocular lens implantation, and may be helpful for vitreous surgery.
