Abstract

We present a model for the placement of cones in the fovea which is an extension of the model for the near foveolar region presented by Ahumada and Poirson (ARVO 1986). This model has three parameters which can vary with eccentricity: (1) the radius of the cone disk, (2) the ratio of the cone disk standard deviation to the mean radius, (3) the standard deviation of the postpacking jitter addition. The physiological data modeled are the positions of the inner cone segments of the cone mosaic from an adult primate presented by Hirsch and Miller (ARVO 1985). This model correctly tracks the decrease in cone density as eccentricity increases by simply increasing the cone radius with distance. The increase in variance of cone positions in the data, as measured by two descriptive statistics, is consistent with the predictions of the model with the second two parameters constant.

© 1986 Optical Society of America