Related Experiment Video
Updated: Oct 17, 2026

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
The negative directional aftereffect associated with adaptation to the prismatic effects of spectacle lenses
1The Ohio State University College of Optometry, Columbus 43210, USA. fogt.4@osu.edu
Purpose:
To determine whether subjects would demonstrate a negative directional aftereffect in a sparse visual environment after being trained to point accurately through a spectacle lens.
Methods:
Subjects were made myopic using a contact lens and then the myopia was corrected with a spectacle lens. Pointing behavior was used to assess directional localization. Training was carried out by showing subjects their pointing errors.
Results:
Seven of 10 subjects demonstrated a negative directional aftereffect after spectacle lens adaptation.
Conclusions:
The presence of a negative directional aftereffect indicates that some patients who switch between spectacles and contact lenses can accurately localize objects only in one condition. Patients who do not demonstrate a negative directional aftereffect may be able to correctly localize objects with both spectacles and contact lenses.
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