People in Belfast warned drinking habits could be damaging their eyesight

This Alcohol Awareness Week (6-12 July), vision experts are urging the public to consider how drinking habits could be affecting their eye health and vision.

Optical Express is raising awareness that while many people understand the risks alcohol poses to the liver, heart and general health, the impact drinking can have on vision often goes unnoticed.

Heavy drinking can affect the eyes in several ways, with some symptoms appearing faster than many people realise. Blurred vision and bloodshot eyes are among the most common short-term effects, while excessive alcohol consumption can also trigger dry eye symptoms, including irritation, discomfort, itchiness and fluctuating vision.

These symptoms are largely caused by alcohol's dehydrating effect on the body, including the delicate tear film that protects the surface of the eye.

However, the impact of alcohol on vision extends beyond these temporary effects. Long-term excessive alcohol consumption has been associated with damage to the optic nerve, the vital connection responsible for carrying visual information from the eyes to the brain. This damage can result in permanent vision loss.

Research has also suggested that excessive alcohol consumption may contribute to an increased risk of cataract development. Cataracts occur when the eye's natural lens becomes cloudy, leading to blurred vision, increased glare and reduced quality of vision. 

While cataracts are most commonly associated with ageing, lifestyle factors such as smoking, poor diet and excessive alcohol consumption may also contribute to their development.

Dr Stephen Hannan, Group Clinical Services Director at Optical Express, said: "Most people understand the impact alcohol can have on their liver, heart and general health, but few appreciate the effect it can have on their eyes and vision.

"In the short term, alcohol can cause blurred vision, dry eyes, irritation and the familiar bloodshot appearance many people experience after drinking. While these symptoms are often temporary, excessive alcohol consumption over many years can contribute to more serious eye health problems.

"Long-term alcohol abuse can permanently damage the optic nerves within our eyes, which are responsible for transmitting visual information to the brain. There is also evidence that excessive alcohol consumption may increase the risk of cataract development, one of the leading causes of visual impairment worldwide.

"Cataracts can significantly affect a person's independence, mobility and quality of life. Although ageing remains the primary risk factor, lifestyle choices can also play an important role in maintaining long-term eye health.

"For patients considering vision correction surgery, maintaining good eye health is equally important. Excessive alcohol consumption can worsen dry eye symptoms, which are routinely assessed before laser eye surgery and lens replacement surgery. Reducing alcohol intake can help support healthier tear film function and overall ocular surface health.

"The good news is that reducing alcohol consumption can have positive effects throughout the body, including the eyes. In many cases, symptoms such as blurred vision and dry eyes can improve, while reducing alcohol intake may help protect long-term eye health."

Dr Hannan is encouraging people to take positive steps this Alcohol Awareness Week by considering alcohol-free days, reducing overall consumption and attending regular eye examinations.

"Many eye conditions, including cataracts and early signs of optic nerve damage, can develop gradually without obvious symptoms. A comprehensive eye examination can help identify changes before they begin to affect quality of life."

To find out more about eye health or to book a consultation, visit Optical Express.