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To the Editor.
—The January issue of the Archives (97:65-75, 1979) contains two articles concerning pseudopapilledema. Both articles refer to a case of optic nerve drusen with associated visual loss reported by Kamin et al in the Archives (89:359-362, 1973). Dr Rosenberg and his colleagues question the visible hyaline bodies as the cause for vision loss in the case of Kamin et al.The patient described in 1973 has been followed up to his present age of 25 years. His vision has declined steadily to a current level of counting fingers in either eye in association with increasing prominence of the hyaline bodies and increasing generalized optic atrophy. Nothing in the course of the patient's condition nor in extensive investigations supports a diagnosis of multiple sclerosis or any process other than that of the hyaline bodies to account for the vision loss.The reiteration of caution in too readily attributing