WE'VE all heard the expression "blind drunk" but what effect does alcohol have on our eyes and vision? - well quite a bit it seems.
Create a free account to read this article
$0/
(min cost $0)
or signup to continue reading
Studies show that alcohol consumption helps us to believe we are more attractive, brighter, funnier and original. This can lead to a number of light-hearted moments at the office Christmas party – or, play a role in high jinx that may be regretted the next morning.
“UK researchers have previously found that alcohol influences our perception of gaze; that is who we think may be looking at us and whether this is a good or bad thing. Increasing levels of alcohol appear to heighten these perceptions.” said Dr Jeff Friedrich of Vision Eye Institute.
Thus, the rather unattractive term: ‘beer goggles’.
“There is further evidence to suggest that alcohol may reduce our ability to make rapid scanning eye movements necessary to negotiate most tasks. In short, it may not only be harder to walk after a few drinks but also harder to see, and of course more dangerous to drive.”
Korean researchers have found traces of alcohol in patient tears which decreased the quality of the tears. A compromised tear film may result in dry or irritable eyes and impact upon vision.
More recently, Spanish clinicians have found that increasing blood-alcohol levels were significantly linked to deterioration in the subjects’ optical quality, which is the ability to see under low or dim light conditions.
“Significant alcohol consumption or binge drinking can actually be toxic to the eye – this can lead to optic nerve damage. Patients may encounter significant, painless loss of vision within 12 to 48 hours of severe intoxication.” said Dr Friedrich. “Recovery is variable with some patients enduring long-term poor vision, loss of peripheral or side vision and colour vision issues. This has been linked in particular to unbranded or home brewed alcohol.”
Long-term studies of heavy alcohol consumption have repeatedly shown an increased risk for ocular disease. A 2015 review confirmed the link between the heavy consumption of alcohol, listed as greater than two standard drinks per day, and the diagnosis of cataract.
Some facts about alcohol and eyes.
- Worldwide studies have confirmed that alcohol is listed as a contributing factor for between 14% to 66% of ocular trauma cases.
- Blood alcohol coupled with the complexity of driving is the main variable for impaired driving i.e. even if you are on the limit or just below, if the circumstances aren’t optimal, then driving can be a significant hazard.
- People drinking more than one drink a day (or those that binge drink) were more often associated with self-reported vision impairment.
- Drinking, even at low amounts, can cause changes to the way a person can fix, scan and locate objects. This has implications for carrying out most standard tasks.
However, it’s not all bad news; moderate consumption of alcohol has been shown to have a basic protective effect on the formation of cataract and the progression to diabetic related eye disease.
The overall message remains clear – enjoy the festive season however moderation remains the key to both good times and healthy eyes!
