Double-mirror peripheral vitrectomy lens
M. Ohji and Y. Tano
Department of Ophthalmology, Osaka University Medical School, Suita, Japan.
Many surgeons use prism lenses to see the periphery of the fundus during
vitrectomy; however, chromatic aberrations in higher-power prismatic lenses
cause blurring of the peripheral image. For better visualization of the
periphery of the fundus, we developed a new contact lens, the double-mirror
peripheral vitrectomy lens. The new lens is a quartz cylinder with two
mirrors, and it provides a crisp, clear, upright image of much more of the
peripheral fundus than is visible through conventional prism lenses. The
new lens also provides a wider area of view than conventional prism lenses.
