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Related Experiment Video

Updated: Jul 28, 2025

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

Introducing Dynamic Stimulation Aberrometry: Binocular Objective Accommodation versus Subjective Measures.

Maximilian Hammer^1,2, Yvonne Heggemann², Gerd U Auffarth^1,2

¹David J. Apple International Laboratory for Ocular Pathology, Heidelberg, Germany.

Ophthalmology Science

|May 30, 2023

Summary

Dynamic stimulation aberrometry offers objective binocular accommodation measurement, revealing age-related declines in amplitude and increased response time. This method also tracks pupil motility, providing valuable insights into visual function.

Keywords:

Aberrations Accommodation Dynamic wavefront measurement Objective accommodation Pupil motility

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Area of Science:

Ophthalmology
Optometry
Vision Science

Background:

Objective measurement of binocular accommodation is challenging.
Dynamic stimulation aberrometry (DSA) uses wavefront measurements for dynamic accommodation assessment.

Purpose of the Study:

Introduce DSA for objective binocular accommodation measurement in a large, diverse patient group.
Compare DSA findings with the subjective push-up method and historical data.

Main Methods:

Enrolled 91 patients (20-67 years) with healthy or post-IOL myopic eyes.
Performed DSA measurements on all participants.
Validated DSA with the subjective push-up method in a subset of patients.

Main Results:

Objective accommodative amplitude decreased significantly with age.
Accommodation response time increased with age (P=0.0002).
Maximum pupil motility during accommodation decreased with age (P=0.0002).

Conclusions:

DSA provides objective, dynamic, binocular measurement of accommodation and pupil motility.
The method has high time resolution and is suitable for amplitudes up to 7 D.
DSA can serve as a control method in future vision studies.