To the Editor.
—We read with great interest the article by Volkov et al1 on endoscopic surgery for posterior segment abnormalities in patients with opacification of the cornea and lens. If anterior segment opacity prevents accurate assessment of the condition of posterior segment structures (eg, after severe trauma), the endoscope may indeed prove to be a useful diagnostic tool. With further technical development, it might also allow viewing of the ciliary body and the posterior iris and might also be used to perform surgical procedures2 in these areas. If the actual condition of the posterior retina and/or the optic nerve is deemed such that visual function is hopeless even with advanced surgery, the effort should be terminated. If, however, it is determined that the optic nerve and posterior retina are viable and that reconstructive surgery is likely to improve the situation, we believe that temporary keratoprosthesis vitrectomy may
Kuhn F, Witherspoon CD, Morris RE. Endoscopic Surgery vs Temporary Keratoprosthesis Vitrectomy. Arch Ophthalmol. 1991;109(6):768. doi:10.1001/archopht.1991.01080060022010
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