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Related Experiment Video

Updated: Jun 23, 2026

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes

Published on: March 3, 2023

Changes of ocular aberrations with gaze.

P Prado¹, J Arines, S Bará

¹Fisica Aplicada, Universidade de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain.

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)

|May 9, 2009

Summary

Eye aberrations show minimal significant changes with gaze direction. Variability from factors like eye movements and measurement noise masks subtle trends, requiring better experimental control for future studies.

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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

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Published on: July 21, 2020

Area of Science:

Ophthalmology
Optical Engineering
Vision Science

Background:

Ocular aberrations influence visual quality.
Understanding how aberrations change with gaze is crucial for vision correction.
Previous studies have yielded mixed results on gaze-dependent aberrations.

Purpose of the Study:

To investigate the dependence of ocular aberrations on gaze direction.
To quantify changes in Zernike coefficients with varying gaze positions.
To identify factors contributing to variability in aberration measurements.

Main Methods:

Utilized a fast-acquisition Hartmann-Shack wavefront sensor.
Analyzed data from three human eyes.
Measured ocular aberrations at different gaze positions.

Main Results:

Observed some trends in specific aberration terms with gaze.
Most Zernike coefficient changes were smaller than measurement variability.
The null hypothesis (no significant change with gaze) was difficult to reject.

Conclusions:

Gaze-dependent changes in ocular aberrations are subtle and often masked by variability.
Factors like accommodation microfluctuations, eye movements, and tear film dynamics contribute to noise.
Improved control over aberration sources is needed for future research on gaze-dependent aberrations.