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  • Title: [Localized forms of retinopathia pigmentosa].
    Author: Lessel MR, Thaler AR, Heilig P.
    Journal: Wien Klin Wochenschr; 1986 May 02; 98(9):264-9. PubMed ID: 3727597.
    Abstract:
    Classification of localized forms of peripheral retinitis pigmentosa can be performed according of the pigmented areas: Unilateral RP (URP): Probably a phenocopy. It mimics typical RP clinically and electrophysiologically in one eye, sparing the fellow eye. Sector RP (SRP): Bone corpuscle-like intraretinal pigmentations a cover a fundus sector (mainly the lower half of the fundi). Corresponding field defects. Progressive paravenous retinochoroidal atrophy (PPRCA): Paravenous distribution of retinal pigmentations. Tongue-shaped field defects. Peripapillary RP (PPD): Pigmentary retinal deposits in the area surrounding the optic disc. Corresponding field defects. Electrophysiology is an important tool in the diagnosis of localized forms of retinitis pigmentosa: The amount of reduction of ERG amplitudes corresponds to the pigmented retinal area. The impaired EOGs indicate a general involvement of the retinal pigment epithelium. In contrast, acquired-e.g. postinflammatory or circulatory-processes display normal EOGs.
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