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VisionPerformance.Store
Foveal Dark Adaptation by
Albert J. Hofeldt, MD
Free Shipping USA over $500.00.
Purchase at Apple Store
Focal Dark Adaptation (FDA): UPDATE
Only Test of FDA on Earth: US Patented
Discovered by Hecht 1921, Patented by Hofeldt 2021
MacHealth App: Macular Test: NEW
Testing Questions: Message 305 538 7696
Video for learning Fovea Test: Tap Paperclip---links to arrow at right-upper corner = Open the video. Mimic of real tests,
Click the above App download to order from APPLE.
MacDx App: Macular Test: Professional

Test examples to learn the method and order an app for real test!
DiagnosticGame app: All vision tests


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