Vitreous fluorophotometry in patients with crystalline retinopathy.

Patients with various stages of crystalline retinopathy were examined with vitreous fluorophotometry and the results were compared with those of normal subjects. Two patients with glistening crystals without pigment clumps, together with atrophy of the retinal pigment epithelium in the posterior pole, showed a normal inward permeability of fluorescein. Three patients with a large area of choriocapillaris atrophy in the posterior pole, in addition to atrophy of retinal pigment epithelium, demonstrated an increase in the rate of inward fluorescein penetration. Three patients with extensive areas of choriocapillaris atrophy throughout the fundus also revealed an increased posterior vitreous penetration ratio.