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A clinical instrument measures spatial distortion in aniseikonia, indicating potential lens adaptation issues.
A simple clinical instrument to measure aniseikonic distortion of the visual space is described. Though not intended as a substitute for an eikonometer to be used by the clinician who specializes in aniseikonia, the device can nevertheless be used by the optometrist who wishes to be able to predict lens adaptation difficulties and who may further wish to measure low‐magnitude aniseikonia as a guide to lens curvature modification.
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John H. Carter (1968) studied this question.
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