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Related Experiment Video

Updated: May 31, 2025

Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes
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Wavefront sensing: A breakthrough for objective evaluation of dynamic accommodation in accommodative dysfunctions.

Jessica Gomes1, Sandra Franco1

  • 1Centre of Physics of the Universities of Minho and Porto, University of Minho, 4710-057, Braga, Portugal.

Computers in Biology and Medicine
|January 23, 2025
PubMed
Summary

Wavefront sensing objectively assesses dynamic accommodation, revealing subtle dysfunctions missed by standard exams. This method improves diagnosis accuracy and aids personalized treatment for better patient outcomes.

Keywords:
AberrometryAccommodationAccommodative dysfunctionsHartmann-shackWavefront sensing

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Accommodative dysfunctions significantly impact near-vision tasks and quality of life.
  • Current clinical examinations may not detect all subtle accommodative issues.
  • Objective assessment methods are needed for precise diagnosis and treatment.

Purpose of the Study:

  • To utilize wavefront sensing for objective detection and assessment of dynamic accommodation.
  • To characterize accommodative responses in various accommodative dysfunction groups.
  • To evaluate the efficacy of wavefront sensing in identifying previously undetected accommodative problems.

Main Methods:

  • Sixty-three subjects were categorized into control, symptomatic without dysfunction (SWD), infacility (INFA), excess (EA), and insufficiency (INSA) groups.
  • Dynamic accommodation was stimulated and measured using wavefront sensing during accommodation and disaccommodation cycles.
  • Ocular aberrations were analyzed to compute dynamic accommodation parameters like response time, peak velocity, and microfluctuations.

Main Results:

  • Subjects with accommodative dysfunctions exhibited altered accommodative responses compared to controls, including slower, excessive, or reduced responses.
  • Increased accommodative microfluctuations and impaired relaxation were observed in dysfunction groups.
  • The SWD group showed significant changes, indicating accommodative issues not detected by conventional methods.

Conclusions:

  • Wavefront sensing provides a comprehensive and objective method for detecting and characterizing dynamic accommodation dysfunctions.
  • This technique enhances diagnostic precision, identifying cases missed by current clinical examinations.
  • Objective dynamic accommodation assessment can inform personalized treatment planning and improve patient outcomes.