1. A new lens for closed pars plana vitrectomy;Tolentino;Arch Ophthalmol,1979
2. A fixed contact lens retaining ring with its own irrigating system for pars plana vitrectomy;Zinn;Ophthalmic Surg,1980
3. Viewing and Illumination during Intraocular Surgery;O'Malley,1977
4. Vitreoretinal Disorders;Tolentino,1976