Journal
OPHTHALMOLOGY
Volume 112, Issue 6, Pages 1062-1065Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ophtha.2004.12.029
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Funding
- NEI NIH HHS [EY00417, EY015240] Funding Source: Medline
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Purpose: To provide the first ophthalmic case report of a Caucasian patient with the rare autosomal recessive disease aceruloplasminemia, which results in iron overload in the retina, brain, and pancreas. Design: Single observational case report. Methods: Perls' staining of a conjunctival biopsy was used to detect elevated iron levels in the conjunctival epithelium. Fundus photography, fluorescein angiography, and electroretinography were used to document retinal appearance and function. Results: Unlike a report of a Japanese patient with aceruloplasminemia, who had midperipheral retinal pigment epithelium (RPE) cell atrophy and yellowish discoloration of the fundus, our Caucasian patient had a maculopathy. Beginning at age 47, he had development and progression of multiple subretinal yellowish-white lesions and RPE cell atrophy. To confirm tissue iron overload in our patient, we took the novel approach of a conjunctival biopsy, which showed Perls' Prussian blue-positive epithelial cells. Conclusions: Given our recent finding of elevated iron levels in the RPE of patients with age-related macular degeneration (AMD), it is interesting that retinal iron overload in aceruloplasminemia is associated with a maculopathy that clinically resembles AMD. This finding supports the hypothesis that retinal iron homeostasis is essential for normal retinal function. Disruption of iron homeostasis could contribute to the pathogenesis of AMD.
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