Figure 8.

Biased light propagation through the retina. Laser light emanating from a glass fiber was projected onto the retina from the vitread side (compare to Fig. 1c). (Green square) The y position of the fiber that was moved in equal steps of 1 μm across the retinal surface (every second position shown). (Red) Resulting light pattern at the receptor side of the retina. Unlike the fiber, the pattern of illuminated photoreceptor cells moves rather irregularly; large jumps alternate with sequences of stationarity. In some positions, more than one photoreceptor group was illuminated. (Blue square) Center-of-intensity calculated for each frame after background substraction. The locations of these points were used for the plot of cumulative distances in Fig. 7b. Scale bar 5 μm.