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. Author manuscript; available in PMC: 2009 Nov 5.
Published in final edited form as: Prog Retin Eye Res. 2006 Sep 1;25(5):425–448. doi: 10.1016/j.preteyeres.2006.07.001

Figure 1.

Figure 1

The multifocal stimulus. A: The stimulus array is comprised of 103 hexagonal elements that are scaled with retinal eccentricity. The X in the center is the fixation target. The stimulus elements are modulated pseudorandomly between black (< 3 cd/m2) and white (200 cd/m2) according to an m-sequence. B: Spatial correspondence between the stimulus array and the retina is shown. The fundus photograph is of the left eye of a diabetic patient with no retinopathy.