Stereoscopic Acuity with Induced Refractive Errors

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Abstract
The relation between refractive error and stereoscopic acuity was investigated by measuring stereoacuity with different combinations of positive and negative spherical lenses over the usual refractive correction. A detailed study was performed on two subjects. In general, there was little change in stereoacuity when the added lenses were of equal power. On the other hand, power inequality almost invariably caused a reduction in stereoacuity. A technique is described for detecting a refractive overcorrection by means of a sequence of stereoacuity measurements.

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