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Depth Perception and Spatial Vision01:15

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Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes
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Published on: March 3, 2023

Age-related changes in accommodation measured with a double-pass system.

Mikel Aldaba1, Meritxell Vilaseca, Montserrat Arjona

  • 1Centre for Sensors, Instruments, and Systems Development (CD6), Universitat Politecnica de Catalunya (UPC), Barcelona, Spain. aldaba@cd6.upc.edu

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
|March 2, 2013
PubMed
Summary

Younger adults (15-35 years) exhibit robust accommodative response, measured by double-pass optics. Older individuals show a significant decline in accommodative ability after age 35.

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Published on: February 23, 2018

Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Accommodation is the eye's ability to change focus.
  • Accurate measurement of accommodation is crucial for understanding visual function.
  • Previous studies have not extensively characterized accommodative response across a wide age spectrum using advanced optical metrics.

Purpose of the Study:

  • To quantify accommodative response across a broad age range (15-55 years).
  • To utilize retinal image quality from a double-pass system to assess accommodation.
  • To analyze the accommodative stimulus-response curve and optical quality changes with age.

Main Methods:

  • A custom double-pass system measured accommodative response in 84 participants (15-55 years).
  • Participants were grouped by age (15-25, 26-35, 36-45, 46-55).
  • Accommodation was stimulated using the push-up method (0-5 diopters) with open-field fixation.

Main Results:

  • High accommodative response (≥4D) was observed in younger groups (15-35 years).
  • A significant decrease in accommodative response, curve, and slope occurred in individuals over 35 years.
  • Eye's optical quality remained stable during accommodation across all age groups.

Conclusions:

  • Individuals aged 15-35 demonstrate strong accommodative function.
  • A notable decline in accommodative response parameters begins after age 35.
  • Younger age groups exhibited greater accommodative response than previously reported.