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Vanishing Letters To Diagnose AMD Sooner

A new test featuring black and white letters is able to catch the first signs of age-related macular degeneration (AMD) sooner than ever before.
The Moorfields acuity chart features letters created from fine black and white stripes. However, unlike the standard chart, these two-coloured, high-spatial frequency letters appear to vanish when they are too small to be recognised. This feature means the Moorfields chart is sensitive enough to diagnosis AMD early and monitor its progression far more precisely than standard letter charts.

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