Accommodative responses to conflicting stimuli.
In this study we examined the monocular accommodative response when subjects (N = 12) simultaneously viewed two overlapping, horizontally and vertically oriented targets located at disparate dioptric distances from the observer. The proximal and distal stimuli were located at dioptric levels of 5 and 3, 3 and 1, or 5 and 1 D, respectively. A broad spectrum of individual responses was observed for all target conditions. Additionally, a significant correlation was observed between the accommodative response when the ambiguous targets were viewed and the response found in the absence of a blur stimulus to accommodation. This finding suggests that when conflicting information is provided to a particular component of accommodation, the relative importance of that component in the determination of the aggregate accommodative response is attenuated.
Rosenfield
M
M
Schnurmacher Institute for Vision Research, Department of Vision Sciences, State University of New York, State College of Optometry, New York 10010.
Ciuffreda
K J
KJ
D000065:Accommodation, Ocular / Q000502:physiology*; D000328:Adult; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D010775:Photic Stimulation