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Sorsby's pseudoinflammatory macular dystrophy
Abstract:
Forty-three additional members of a family described originally by Sorsby and Mason have been examined in order to typify pseudoinflammatory macular dystrophy more accurately. Six new affected members were identified by history alone and a further 7 were examined. Vision is lost from disciform macular degeneration generally during the 5th decade of life. Thereafter peripheral degeneration occurs in some affected members. Before loss of vision the fundus changes include fine drusen-like deposits at the level of Bruch's membrane, angioid streaks, and plaque-like deposits of yellow subretinal material in the macular region. These changes are different from those seen in dominant drusen.
Insights
This study refines the understanding of pseudoinflammatory macular dystrophy by examining family members. It details vision loss and characteristic fundus changes, differentiating it from dominant drusen.
Area of Science:
- Ophthalmology
- Medical Genetics
Background:
- Pseudoinflammatory macular dystrophy is a rare inherited retinal disorder.
- Previous descriptions by Sorsby and Mason established initial findings.
Purpose of the Study:
- To more accurately typify pseudoinflammatory macular dystrophy.
- To identify additional affected individuals and characterize disease progression.
Main Methods:
- Examination of 43 additional family members.
- Identification of affected individuals through history and clinical examination.
Main Results:
- Six new affected members identified by history; 7 examined.
- Vision loss typically occurs in the 5th decade due to disciform macular degeneration.
- Fundus changes include drusen-like deposits, angioid streaks, and subretinal plaques.
Conclusions:
- The study enhances the characterization of pseudoinflammatory macular dystrophy.
- Distinctive fundus findings differentiate this condition from dominant drusen.