Retina
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To describe the enlargement of the dense scotoma over time in Stargardt disease and to highlight methodologic issues in tracking enlargement. ⋯ Microperimetry is necessary for mapping the scotoma in patients with Stargardt disease, because current imaging is not adequate. Standardized grid testing, plus a standardized procedure for refining the border of the dense scotoma, should allow more precise testing and longitudinal assessment of enlargement rates.