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Related Experiment Video

Updated: Dec 5, 2025

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Changes in accommodation dynamics after alcohol consumption, for two different doses.

Miriam Casares-López1, José J Castro-Torres2, Sonia Ortiz-Peregrina1

  • 1Department of Optics, Laboratory of Vision Sciences and Applications, University of Granada, Granada, Spain.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|October 16, 2020
PubMed
Summary
This summary is machine-generated.

Alcohol consumption negatively impacts visual accommodation, reducing speed and increasing response times. Higher doses and stronger visual demands significantly impair accommodative facility and dynamics.

Keywords:
Accommodation dynamicsAccommodative facilityAlcohol consumptionVisual impairment

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Vision Science

Background:

  • Alcohol consumption is known to affect cognitive and motor functions.
  • Its specific impact on the complex visual process of accommodation requires detailed investigation.

Purpose of the Study:

  • To investigate how different doses of alcohol influence accommodation dynamics.
  • To quantify changes in accommodative responses and facility.

Main Methods:

  • 20 emmetropic subjects underwent accommodation testing at baseline and after consuming 300ml and 450ml of red wine.
  • Accommodation dynamics (velocity, response time, microfluctuations) and accommodative facility were measured using autorefraction and flippers.
  • Breath alcohol content (BrAC) was recorded.

Main Results:

  • Alcohol significantly reduced mean accommodation velocity and velocity peaks, especially at 5.0D.
  • Response time increased, and accommodative microfluctuations were higher with increased alcohol intake.
  • Accommodative facility significantly decreased with both alcohol doses, correlating with BrAC.

Conclusions:

  • Alcohol intake demonstrably impairs accommodation dynamics, affecting velocity, response time, and facility.
  • These effects are more pronounced with higher alcohol doses and greater visual demands (5.0D target vergence).
  • Findings highlight alcohol's detrimental effect on visual performance.