May 2005
Volume 46, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2005
Evaluation of Light Weight Autoclavable Self–Stabilizing Wide–Angle Contact Lens for Vitreous Surgery
Author Affiliations & Notes
  • S.K. Gupta
    Ophthalmology, University of Florida, Jacksonville, FL
  • G.Y. Shah
    Ophthalmology, University of Florida, Jacksonville, FL
  • V.A. Shah
    Ophthalmology, University of Florida, Jacksonville, FL
  • K.V. Chalam
    Ophthalmology, University of Florida, Jacksonville, FL
  • Footnotes
    Commercial Relationships  S.K. Gupta, None; G.Y. Shah, None; V.A. Shah, None; K.V. Chalam, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2005, Vol.46, 690. doi:
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    • Get Citation

      S.K. Gupta, G.Y. Shah, V.A. Shah, K.V. Chalam; Evaluation of Light Weight Autoclavable Self–Stabilizing Wide–Angle Contact Lens for Vitreous Surgery . Invest. Ophthalmol. Vis. Sci. 2005;46(13):690.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract
 
Abstract:
 

 

To evaluate an autoclavable self–stabilizing light weight wide–angle contact lens for vitreoretinal surgery

 

 

The light weight wide angle contact lens has two pieces in a high temperature resistant 302oF (150oC) plastic casing. This modification of the lens over the previously described conventional autoclavable lens is the casing. The casing has a window in the middle of the two lens parts. The inferior part has an acrylic concavo–convex lens with footplates (refractive index [RI] 1.51). The superior biconvex lens is made of glass (RI 1.883). The convex superior surface has a ROC of 6.95 mm

 

 

The refractive power of the lens is 150D, magnification 0.39X, and static field of view (total area of retina in a single field)106o, while the dynamic field (total area of the fundus that can be viewed by moving the lens on the cornea) is 127o. The plastic casing wiht a window reduces weight, allowing better lens stability on the eye during vitreous surgery. The open lens design prevents the lens from fogging during autoclaving and vitreous surgery on the eye. The lens is easy to sterilize by autoclaving and does not require the expensive gas sterilization or potentially injurious chemical sterilization.

 

 

The autoclavable self–stabilizing light weight wide–angle contact lens allows visualization of the peripheral retina during surgery and faster sterilization by autoclaving between surgeries without the disadvantage of lens fogging.

 

 

 
Keywords: optical properties • vitreoretinal surgery • contact lens 
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