Ultrastructure of the preretinal membrane in retinitis pigmentosa.
نویسنده
چکیده
Light and electron microscopic examination of the retina and optic nerve in patients with retinitis pigmentosa has revealed a larger of fibrous astrocytes (preretinal membrane) apposed to the inner limiting lamina of the optic nerve retina. This preretinal membrane was centered on the disc, was many cell layers thick over the optic nerve and peripapillary retina, and was tapered to a single cell layer near its anterior margin. Processes of fibrous astrocytes from the optic nerve and peripapillary retina extend into the preretinal membrane through gaps in the inner limiting lamina of the optic nerve and peripapillary retina. The preretinal membrane may be responsible for the abnormally high fundus reflex, the waxy pallor of the disc, and posterior vitreous detachment frequently observed in patients with retinitis pigmentosa.
منابع مشابه
The association of retinitis pigmentosa with preretinal macular gliosis RICHARD
A retrospective study of the histopathological features of retinitis pigmentosa was undertaken. A consistent finding in 10 out of 10 eyes from 6 patients with retinitis pigmentosa was the presence of a preretinal membrane. The frequency of this finding has not been noted previously. Preretinal gliosis may well be responsible for the production of the abnormal glinting fundus reflex seen at the ...
متن کاملThe association of retinitis pigmentosa with preretinal macular gliosis.
A retrospective study of the histopathological features of retinitis pigmentosa was undertaken. A consistent finding in 10 out of 10 eyes from 6 patients with retinitis pigmentosa was the presence of a preretinal membrane. The frequency of this finding has not been noted previously. Preretinal gliosis may well be responsible for the production of the abnormal glinting fundus reflex seen at the ...
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عنوان ژورنال:
- Investigative ophthalmology & visual science
دوره 21 2 شماره
صفحات -
تاریخ انتشار 1981