For detailed examination and minute surgical manipulation of retinal membranes in phakic and pseudophakic eyes. High resolution PMMA optics with a silicone flange for stability. Ocular Disposable Vitrectomy Lenses are designed to be used once, then discarded. Packaged individually in a sterile peel pack, and sold in a box of 10. The silicone flange replaces the need for a suture-down ring.