Abstract

Retinal sensitivity and the critical area of the spatial summation in the foveal and parafoveal regions were investigated by using a fundus-controlled perimeter to monitor accurately a subject’s fundus picture and target position on the retina. The first experiment showed that retinal sensitivity and the critical area change continuously from fovea to periphery and that the diameter of the critical area is a linear function of retinal eccentricity. In the second experiment, this linear relationship was verified by another method.

© 1981 Optical Society of America

Spatial and temporal summation in the human dark-adapted retina

P. Zuidema, H. Verschuure, M. A. Bouman, and J. J. Koenderink
J. Opt. Soc. Am. 71(12) 1472-1480 (1981)

Spatial summation in human cone mechanisms from 0° to 20° in the superior retina

Vicki J. Volbrecht, Erin E. Shrago, Brooke E. Schefrin, and John S. Werner
J. Opt. Soc. Am. A 17(3) 641-650 (2000)

Senescence of foveal and parafoveal cone sensitivities and their relations to macular pigment density

John S. Werner, Michelle L. Bieber, and Brooke E. Schefrin
J. Opt. Soc. Am. A 17(11) 1918-1932 (2000)

Retinal inhomogeneity. II. Spatial summation

D. H. Kelly
J. Opt. Soc. Am. A 1(1) 114-119 (1984)

The area of complete scotopic spatial summation enlarges with age

Brooke E. Schefrin, Michelle L. Bieber, Ryan McLean, and John S. Werner
J. Opt. Soc. Am. A 15(2) 340-348 (1998)