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Top: The averaged normalized 2f FFT for each of the two subject groups for eccentricities between 0.5 and 3.0° demonstrating a smaller normalized 2f FFT for the AMD group at each eccentricity. Bottom: The averaged RMS error from 2f curve fitting for each of the two subject groups for each eccentricity between 0.5 and 3.0° demonstrating higher RMS at each eccentricity resulting from poorer curve fitting in the AMD group.
