Abstract

Changes in the interactions between accommodation and vergence have been linked to the development of myopia in adults. Jiang (1995) reported that AC/A (accommodative convergence/ accommodation) ratios of young adults who became myopic over a 2 to 3 year period were higher at the outset than those of subjects who remained emmetropic. Previously we reported that newly myopic children show insufficient accommodative response to blur (Gwiazda et al, 1993). We have speculated that this accommodative lag might create a blurred image on the retina when an individual is engaged in near work, which could induce myopia, as occurs with animal models. Reduced accommodation could also account for elevated AC/A ratios in myopes.

© 1996 Optical Society of America