Abstract
In this paper, we report the results of estimating the minimum frequency of alternative left-right stereopair image presentation necessary to obtain stereopsis in children with ophthalmopathology including or not including binocular disorders. It was found that all subjects without binocular disorders had stereo-effect with both linear and random-dot images. However, for the stereopsis with random-dot stereotests, all children required a higher frequency of alternation than for the stereopsis with simple linear images. It was found that approximately 90% of children with binocular disorders were able to perceive depth when simple linear stereoscopic images were presented alternatively to the two eyes. However, these patients required a higher frequency of alternation than the children with normal binocular functions. Only a small part (approximately 30%) of children with binocular disorders was capable of stereopsis with complex random-dot images, and they required a fairly high frequency (more than 30 Hz) of alternation for success.
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Original Russian Text © S.I. Rychkova, 2015, published in Fiziologiya Cheloveka, 2015, Vol. 41, No. 2, pp. 5–13.
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Rychkova, S.I. Frequency thresholds for stereopsis in the case of alternative presenting the left and right images of stereopair in children with ophthalmopathology. Hum Physiol 41, 115–122 (2015). https://doi.org/10.1134/S0362119715010120
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DOI: https://doi.org/10.1134/S0362119715010120