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Changes in Stereoscopic Depth Perception Caused by Decentration of Spectacle Lenses

Jiménez, J. R. PhD; Rubiño, M. PhD; Díaz, J. A. PhD; Hita, E. PhD; del Barco, L. Jiménez PhD

Articles

The effect that decentered spectacle (ophthalmic) lenses exert on depth perception has been studied, evaluating stereopsis through the disparity range (maximum horizontal disparity) for random-dot stereograms (RDS). The results show that variations in fusional convergence due to increments of decentration can diminish the stereopsis in observers, reducing the region within which stereoscopic correspondence can take place. Decreases in disparity ranges were found for vertical and horizontal prismatic effects, although the prismatic effect necessary for this was less in the vertical case. A decreased disparity range has also been confirmed with figural-stimuli stereograms and using prisms for generating the prismatic effects.

Departamento de Óptica, Universidad de Granada, 18071-Granada, Spain

Received June 23, 1999; revision received March 28, 2000.

J. R. Jiménez

Departamento de Óptica

Universidad de Granada

18071-Granada

Spain

e-mail: jrjimene@ugr.es

© 2000 American Academy of Optometry