This investigation was structured to determine whether any of three specific measures of stereopsis improved with time following fitting with the monovision technique. Measurements were taken on nine presbyopic subjects with their habitual prescription as a baseline finding, then repeated with their monovision correction at dispensing, and at 2-day, one-week, and two-week follow-up s. While adaptation was not demonstrated there was a mark ed difference in performance on stereo tests based on add power. Adds below + 1. 75 resulted in significantly better performance than for higher adds.
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