Method and apparatus to identify and treat neovascular membranes

Details Method and apparatus to identify and treat neovascular membranes Method and apparatus to identify and treat neovascular membranes

1992-11-20

1994-01-18

Sykes, Angela D.

Surgery

Truss

Pad

128664, 351206, 351221, 606 4, A61B 312

Patent

active

052792986

ABSTRACT:
The method and apparatus of the invention allow a neovascular membrane in the ocular vasculature of the fundus of the eye to be identified and treated while minimizing damage to the sensory retina. First a bolus of fluorescent dye is injected and allowed to circulate through the ocular vasculature. When the fundus is diffusely irradiated with laser energy, dye present in the vasculature fluoresces. A neovascular membrane is identified when a particular area of fluorescence differs from the fluorescence of the surrounding normal vasculature. To treat the neovascular membrane, a second laser is focused on the site of the membrane and a second bolus of fluorescent dye is injected. When the presence of the second injection of dye is detected, energy from the focused laser is applied to damage or destroy the neovascular membrane.

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