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H W Leibowitz

Publications and source records attributed to H W Leibowitz.

At least 73 records · Page 4Linked to original sources
PubMed1975

Night myopia and the intermediate dark focus of accommodation.

The phenomenon of night myopia, the tendency to overaccommodate for distant objects as luminance is decreased, results from the passive return of accommodation to an individually determined intermediate resting or dark focus. More generally, accommodation is viewed as a compromise between the subject's individual resting focus and the accommodative stimulus. Under optimum viewing conditions, accommodation tends to correspond to the distance of the stimulus, but is biased progressively toward the dark focus as the adequacy of the accommodative stimulus is degraded by decreased luminance. Control experiments suggest that optical aberrations are not major factors that contribute to this effect.

Accommodation, Ocular↗
PubMed1973

Perception.

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Adaptation, Ocular↗
PubMed1972

Peripheral motion detection and refractive error.

Motion thresholds were determined for the fovea and peripheral retina with and without correction for peripheral refractive error. With correction, motion thresholds decreased and inidividual differences disappeared. These results imply that under normal observation conditions, peripheral sensitivity is limited mainly by dioptric rather than retinal variables.

Adult↗