Alcohol can cause temporary visual changes and, with heavy long-term use, may affect eye health more seriously.
Short-term effects of drinking
Even moderate drinking can blur vision and slow pupil reactions. This reduces contrast and makes judging distance and speed more difficult.
- Double vision and poor focus are more likely with higher intake
- Night vision and glare sensitivity often worsen after drinking
- Dry eye symptoms can increase as alcohol dehydrates the body
- Driving after alcohol is dangerous, even if vision seems acceptable
Long-term eye risks
Heavy, prolonged alcohol use is linked with nutritional deficiencies and nerve damage. These can impact both the optic nerve and overall health.
- Chronic abuse may contribute to optic neuropathy and reduced colour vision
- Poor diet and vitamin deficiency can harm the retina
- Moderation and alcohol-free days help protect eyes and body
- Seek medical advice if drinking is difficult to control or vision changes occur
