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- Deposit of lipoproteinaceous material between basal lamina of retinal pigment epithelium and inner collagenous layer of Bruch membrane
- Asymptomatic
- Normal feature in aging eyes
- Also seen in age-related macular degeneration
Imaging
- Fundoscopy: blurring of optic disc margin
- CT: punctate, often bilateral calcific foci at optic nerve heads