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Related Experiment Videos

[Doyne-type honeycombed macular degeneration]

C Ispăşoiu1, C Iliuţã

  • 1Spitalul Militar Central, Bucureşti.

Oftalmologia (Bucharest, Romania : 1990)
|July 1, 1995
PubMed
Summary

Doyne degeneration, a rare genetic eye condition, involves mucopolysaccharide deposits in Bruch's membrane. This case highlights good visual function despite significant ophthalmoscopic lesions.

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Area of Science:

  • Ophthalmology
  • Medical Genetics
  • Retinal Diseases

Background:

  • Doyne degeneration is a rare autosomal dominant condition characterized by drusenoid deposits.
  • It is caused by mutations in the EFEMP1 gene, affecting Bruch's membrane integrity.
  • The condition typically leads to progressive visual impairment.

Observation:

  • A 52-year-old patient presented with lifelong, mosaic-like, yellow-white lesions in the macula, papilla, and interpapillary regions.
  • Ophthalmoscopy revealed a pseudohole in the left macula, with good visual acuity but noticeable image distortion.
  • Functional tests showed central scotomas, reduced visual capacity, diminished adaptometry, and dyschromatopsia.

Findings:

  • Angiography demonstrated hyperfluorescence corresponding to the ophthalmoscopic yellow-white deposits.
  • Lesions were consistent with Doyne degeneration, attributed to mucopolysaccharide accumulation in the cuticular layer of Bruch's membrane.
  • Despite extensive funduscopic changes, the patient maintained relatively good visual function.

Implications:

  • This case underscores the variable clinical presentation and functional prognosis of Doyne degeneration.
  • Understanding the pathophysiology of mucopolysaccharide deposition is crucial for potential therapeutic strategies.
  • Further research into genotype-phenotype correlations may aid in predicting disease progression and visual outcomes.

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