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Updated: Aug 9, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
Symptomatic corneal topographic change induced by reading in downgaze
1Department of Ophthalmology, University of Cincinnati and The Cincinnati Eye Institute, Cincinnati, Ohio, USA. kgolnick.cwest@worldnet.att.net
Objective:
To elucidate the cause of monocular blur or diplopia after reading in downgaze.
Methods:
Corneal topography was obtained before and after a 15-to 30-minute reading effort in downgaze in three symptomatic patients and in nine asymptomatic control subjects.
Results:
Changes in corneal topographic color maps, corneal uniformity index, and predicted corneal acuity were found in the symptomatic patients but not in the control subjects before and after reading.
Conclusion:
Changes in corneal topography can occur after prolonged reading in downgaze and may produce symptoms of blur or monocular diplopia.
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