Abstract
Although electron microscopy has been used to study human senile subcapsular and electric cataract, no previous electron microscopic study has described human traumatic cataract. Such a study is of interest not only on a purely pathologic basis, but also affords the op portunity to document the sequence of events in cataractogenesis, since the exact time of the initial event, i.e., the trauma, is known. In this report we compare three lenses: one (Case 1) was penetrated inferiorly two weeks before extraction; another (Case 2) was penetrated inf eriorly 11 months before extraction. Neither patient had any other predisposing cause for cataract, and the contralateral eye in each case had a clear lens and visual acuity of 20/20. A clear, presumably normal lens (Case 3) was obtained at surgical enuclea tion for a malignant melanoma and served as the control against which ultrastructural changes in the injured lenses were compared.
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