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March 21, 2026American journal of optometry and physiological optics

Forced Vergence Fixation Disparity Curves in Presbyopia

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Authors

BWBruce Wick

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Overview

This research measures fixation disparity curves in presbyopic adults, suggesting the need for normative data across age groups.

Key Points

  • The study aims to evaluate forced vergence fixation disparity curves in an asymptomatic presbyopic population.
  • Measured fixation disparity curves at distance and near on a sample of 62 asymptomatic presbyopic adults.
  • Classified curve types into categories based on the measurements taken at both distances.
  • Compared findings with a prepresbyopic sample of the same size.
  • Approximately 42% of the subjects had the same curve types at both distances.
  • Type 1 curves were more common (38.4%), while type 11 curves were less frequent (3.5%).
  • Different curve types were observed in 58.1% of the subjects, indicating variability in fixation disparity.

Cite This Study

Bruce Wick (1986) studied this question.

synapsesocial.com/papers/69be38596e48c4981c678a55https://doi.org/10.1002/j.2330-9512.1986.tb01222.x
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