Colour Vision Impairment in Young Alcohol Consumers

Area of Science:

• Ophthalmology
• Neuroscience
• Vision Science

Background:

• Alcohol consumption is prevalent among young adults.
• Chronic alcohol exposure can impair visual functions.
• Early alcohol use may initiate later-stage alcohol abuse.

Purpose of the Study:

• Investigate visual functions in young adults with weekly alcohol consumption.
• Evaluate spatial luminance contrast sensitivity, color arrangement ability, and color discrimination thresholds.
• Determine if subclinical visual deficits exist in non-clinically concerned young alcohol consumers.

Main Methods:

• Evaluated 24 young adults (alcohol consumers and controls) with ophthalmological exams.
• Measured spatial luminance contrast sensitivity across 11 spatial frequencies.
• Assessed color vision using the Farnsworth-Munsell 100 hue test (FM 100 test) and Mollon-Reffin test (MR test).

Main Results:

• No significant difference in spatial luminance contrast sensitivity between groups.
• Alcohol consumers made more errors on the FM 100 test, with diffuse mistake distribution.
• Alcohol consumers exhibited higher color discrimination thresholds on the MR test compared to controls.

Conclusions:

• Young adult weekly alcohol consumers demonstrate subclinical color vision losses.
• Spatial luminance contrast sensitivity is preserved in this group.
• Alcohol exposure during young adulthood may negatively impact developing visual functions, particularly color vision.