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Hereditary pigmented paravenous chorioretinal atrophy
N Bozkurt1, T Bavbek, H Kazokoğlu
1Ophthalmology Department, Marmara University Faculty of Medicine, Istanbul, Turkey.
Ophthalmic Genetics
|August 8, 1998
Summary
Pigmented paravenous chorioretinal atrophy (PPCRA) is a rare genetic disorder. This study reports a family with PPCRA, suggesting X-linked inheritance patterns and highlighting varied clinical presentations.
Area of Science:
- Ophthalmology
- Medical Genetics
Background:
- Pigmented paravenous chorioretinal atrophy (PPCRA) is a rare inherited retinal disorder.
- Diagnosis is based on characteristic fundoscopic findings of retinal pigment epithelial (RPE) atrophy and clumping in a paravenous distribution.
Observation:
- A family presented with varying degrees of PPCRA, including affected mother, daughter, and son.
- The proband, a severely affected male, exhibited bilateral PPCRA with macular involvement and chronic angle closure glaucoma.
- Affected family members displayed hyperopia, RPE hyperplasia, and abnormal retinal veins, with electroretinogram (ERG) abnormalities noted.
Findings:
- This is the fourth reported instance of familial PPCRA.
- The observed pedigree is consistent with either X-linked recessive or dominant inheritance patterns.
- Clinical manifestations ranged from asymptomatic to severe, with some individuals showing only dilated retinal veins and hyperopia.
Implications:
- Further research into the genetic basis of PPCRA is warranted.
- Understanding the inheritance patterns can aid in genetic counseling and early diagnosis.
- The varied presentation underscores the importance of comprehensive ophthalmological evaluation in affected families.