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To the Editor.
—Several recent articles have called attention to the value of panretinal photocoagulation for treatment of rubeosis. We also have noted a gratifying response to this treatment. But what does one do if the media are too hazy for photocoagulation? We have used panretinal cryotherapy for six eyes and each patient has been followed up for more than one year postoperatively. This was done in an attempt to prevent intractable pain and enucleation.We administered from 90 to 120 applications of cryotherapy covering the entire retina except the posterior pole and a narrow sector of retina from the disc to the nasal periphery. The nasal area was not treated, in an attempt to preserve some temporal visual field as well as central vision. The cryolesions were spaced with a lesion-sized area of untreated retina between lesions. The treatment was applied in two sessions seven to ten days apart.
Hilton GF. Panretinal Cryotherapy for Diabetic Rubeosis. Arch Ophthalmol. 1979;97(4):776. doi:10.1001/archopht.1979.01020010412035