Packing arrangement of the three cone classes in primate retina

We describe a detailed analysis of the spatial arrangement of L, M and S co nes in the living eyes of two humans and one monkey. We analyze the cone mo saics near 1 degrees eccentricity using statistical methods that characteri ze the arrangement of each type of cent: in the mosaic of photoreceptors. I n all eyes, the M and L cones are arranged randomly. This gives rise to pat ches containing cones of a single type. In human, but not in monkey, the ar rangement of S-cones cannot be distinguished from random. (C) 2001 Elsevier Science Ltd. All rights reserved.