Long Term Aspirin Use Linked To Vision Loss

Overview

Recent headlines have linked long-term use of aspirin to a raised chance of losing vision. Aspirin is a common everyday medicine that thins the blood and eases pain. Millions of people take a small daily aspirin to help protect them from heart attacks and strokes. The vision problem being talked about is age-related macular degeneration, or AMD. AMD is a condition where the central part of the retina — the light-sensitive layer at the back of the eye — slowly wears down. The retina's centre is called the macula, and it is the part you use for reading, driving and recognising faces. Some studies have found that people who take aspirin for many years may be a little more likely to develop the 'wet' form of AMD, where tiny fragile blood vessels grow under the retina and leak. Other large studies found no clear link at all. So the evidence is mixed, and experts do not yet agree that aspirin causes AMD. What matters most right now is this: never stop a prescribed aspirin on your own, because doing so can raise your risk of a heart attack or stroke. If you are worried, talk to your doctor or pharmacist.

Age-related macular degeneration is very common. It is one of the leading causes of vision loss in people over 50 in many countries. Aspirin is also extremely common — huge numbers of people take it every day. Because both are so widespread, it is easy to see why researchers keep studying whether one affects the other.

AMD mostly affects people over 50, and the risk keeps rising with age. It is more common in people who smoke, who have a family history of AMD, who have high blood pressure or heart disease, and in people with lighter skin and lighter-coloured eyes. The possible aspirin link is mainly a question for people who have taken aspirin daily for many years, usually for heart or stroke protection.

Symptoms

Common symptoms

• Blurred or fuzzy central vision, even with glasses on
• Straight lines such as door frames or grid lines looking wavy or bent
• Needing brighter light to read or do close work
• Colours looking faded or less bright than before
• Words in the middle of a page disappearing or being hard to read
• A dark, empty or smudgy patch in the centre of your vision
• Faces becoming harder to recognise
• One eye seeming to see less well than the other

Symptoms in children

• AMD is not a childhood condition — it happens with ageing, so the aspirin-and-vision question does not apply to children.
• Children should not take aspirin unless a doctor specifically advises it, because of a rare but serious illness called Reye's syndrome.
• If a child has any change in vision, blurred sight, squinting, or trouble seeing the board at school, arrange an eye test — children's eye problems are usually very treatable when found early.

Symptoms in older adults

• AMD is much more common after age 60, and both eyes are often affected over time, though usually not at the same speed.
• Early AMD often causes no symptoms at all, which is why regular eye tests matter even when sight feels fine.
• Difficulty moving from bright light to dim light, or trouble judging steps and kerbs, can raise the risk of falls.
• Sometimes people with vision loss see things that are not there (called Charles Bonnet syndrome). It is common, not a sign of mental illness, and usually settles — but do mention it to your eye doctor.
• Low vision can lead to low mood or loneliness. This is very common and help is available.

Causes

Main causes

• Age-related macular degeneration is mainly caused by the natural wear and tear of the macula over many years, mixed with genes and lifestyle.
• In 'wet' AMD, the eye grows tiny, fragile blood vessels under the retina. These leak blood or fluid and damage the macula quickly.
• Some research suggests long-term aspirin use might play a part in wet AMD. Aspirin thins the blood and affects how blood vessels behave, so scientists have wondered whether that could make these fragile vessels more likely to leak.
• Other research, including large studies that followed thousands of people over many years, found no clear rise in AMD among aspirin users. So the picture is still unclear.
• What is clear is that aspirin is not thought to cause the more common 'dry' form of AMD.

Risk factors

• Getting older — the single biggest risk factor
• Smoking, or having smoked in the past
• A close family member with AMD
• High blood pressure and heart disease
• Long-term daily aspirin use, especially over many years (a possible but unproven risk)
• A diet low in fruit, vegetables and oily fish
• Being overweight
• Long-term exposure to bright sunlight without eye protection
• Lighter skin and lighter-coloured eyes

When to see a doctor

See a doctor urgently if:

• Any sudden change in your vision — treat it as an emergency and get help the same day
• Straight lines turning wavy or a new blank spot in the middle of your sight
• New flashes or a sudden increase in floaters
• Eye pain, redness or light sensitivity with vision changes

Book a routine appointment if:

• You take daily aspirin and want to talk about the risks and benefits — book a medicine review
• You have noticed your sight is slowly getting worse, or you need brighter light to read
• You have a family history of AMD and want to know about eye checks
• You are over 60 and have not had an eye test in the last two years
• You are finding it harder to read, drive, cook or move around safely
• You feel low, anxious or isolated because of your sight

Diagnosis

An eye care professional — usually an optometrist on the high street or an ophthalmologist, a doctor who specialises in eyes — can check for AMD. They will ask about your sight, your health, your family history and the medicines you take, including aspirin. Then they will look at the back of your eyes with special lights and lenses. The examination is quick and does not hurt. If they see signs of AMD, they may arrange more detailed scans and may send you to a hospital eye clinic.

Tests that may be done

• A sight test using a letter chart, checking each eye separately
• An Amsler grid test — you look at a grid of straight lines and say whether any look wavy, broken or missing
• A dilated eye exam — drops widen your pupil so the retina can be seen clearly (your vision will be blurry for a few hours and you should not drive home)
• Optical coherence tomography (OCT) — a painless scan that takes detailed pictures of the layers of your retina
• Fluorescein angiography — a dye is used to photograph the blood vessels in the eye and show any that are leaking
• A review of all your medicines, including how long you have taken aspirin and why

What to expect at your appointment

Most of the checks are quick and painless. The widening drops can sting briefly and make bright light uncomfortable for a few hours, so bring sunglasses and arrange a lift home. You may be given an Amsler grid to take home so you can check your vision regularly. If AMD is found, your eye team will explain which type you have and whether monitoring or treatment is needed. Nothing changes overnight — you will have time to ask questions and think things through.

Treatment

There is no cure for age-related macular degeneration, but there is a lot that can be done. The main goals are to slow any worsening, protect the sight you have, and help you keep doing the things you enjoy. What is offered depends on which type of AMD you have and how far it has gone. Your eye team will also review all your medicines, including aspirin, and weigh the benefits against the risks with you — that decision is always made together with your doctor, never by you alone.

Self-care at home

• Check your vision at home with an Amsler grid if your eye team gives you one — look at it the same way each time, one eye at a time, wearing your reading glasses
• Never stop, skip or change aspirin or any heart medicine without talking to your doctor first
• Stop smoking, and ask for help if you need it — this is the single best thing you can do for your eyes and your heart
• Wear sunglasses with good UV protection on bright days
• Keep blood pressure and cholesterol in a healthy range
• Use good lighting at home and reduce glare with lampshades and curtains
• Use magnifiers, large-print books and bigger text on phones and tablets
• Have your eyes tested as often as your eye team advises, usually every one to two years, or sooner if things change

Medical treatments

For the 'wet' form of AMD, the main treatment is a series of injections into the eye. These medicines are designed to slow or shrink the fragile, leaky blood vessels and can help protect and sometimes improve sight. The injections are quick, done in a clinic with numbing drops, and most people manage them well. Other options include laser treatment and a light-activated therapy that seals leaking vessels in certain cases. For the more common 'dry' form, there is no treatment that reverses damage. For some people at a certain stage, eye specialists may suggest a specific mix of vitamins and minerals, which has been shown to slow worsening — ask your eye doctor whether it is right for you. Low-vision support, such as magnifiers and training, helps people make the most of the sight they have. Your doctor may also review your aspirin with you: the decision about whether to continue depends on why you take it and your overall risk of heart attack and stroke.

When is surgery considered?

Surgery is not a standard treatment for age-related macular degeneration. In rare situations, an eye specialist may operate to remove a large bleed under the retina, but this is uncommon. Some people with very advanced AMD are helped by special implants or devices that magnify images — your eye clinic can tell you whether anything like this might suit you.

Living with this condition

Losing some central vision changes how you do things, but it does not mean life stops. Most people keep their side vision, which helps with getting around. Many simple changes make daily life easier — better lighting, larger print, contrast at home, and keeping things in the same place. Vision rehabilitation services can teach practical skills, from reading strategies to safe cooking. Give yourself time to adjust. It is normal to feel frustrated some days, and it is equally normal to find new ways of doing things that work well for you.

Lifestyle tips

• Eat plenty of fruit and vegetables, especially leafy greens, and include oily fish in your diet
• Stay active — walking and gentle exercise help your heart, blood pressure and mood
• Keep a healthy weight
• Protect your eyes from bright sun with sunglasses and a hat
• Keep up with regular eye tests and medicine reviews
• Make your home safer: good lighting, night lights, tidy floors and handrails to reduce the risk of falls
• Tell family and friends what helps you — practical support makes a big difference

Diet and exercise

A heart-healthy lifestyle is also an eye-healthy one. Aim for a balanced diet with colourful vegetables and fruit, whole grains, nuts and oily fish a couple of times a week, and go easy on heavily processed foods. Regular activity — anything that makes you a little warm and out of breath, like brisk walking, swimming or cycling — helps blood pressure and circulation, which is good for the tiny blood vessels in your eyes. Your doctor can advise on what is safe for you, especially if you have heart problems or take blood-thinning medicines.

Mental health and emotional wellbeing

Changes in your sight can affect how you feel. It is very common to feel worried, sad, irritable or frustrated, and some people find they lose confidence going out or socialising. These feelings are understandable and treatable. Talking to your GP, a counsellor or a support group can help a lot. If you ever feel hopeless or have thoughts of harming yourself, please reach out for crisis support straight away — contact your local emergency number or a crisis line in your country, or speak to a trusted person who can stay with you. You do not have to cope alone.

Prevention

You cannot fully prevent age-related macular degeneration, but you can lower your risk. Not smoking, keeping blood pressure and weight healthy, eating well and protecting your eyes from bright sun all help. If you take daily aspirin, do not stop it on your own — instead, ask your doctor for a medicine review so you can weigh the benefits for your heart and brain against any possible eye risk. For many people the heart benefits clearly outweigh a small and uncertain eye risk, but it is a decision to make together with your doctor.

Screening programmes

Regular eye tests are the best screening for AMD. In the UK, NHS eye tests are free for many people, including those over 60, and are usually recommended every two years. If you have a family history of AMD or other risk factors, your optometrist may suggest checks more often. Eye tests can pick up early AMD long before you notice any change in your sight.

Complications

If left untreated

• In the 'wet' form, vision can get worse quite quickly without treatment — early assessment matters
• Gradual loss of central vision, making reading, driving and recognising faces harder
• Difficulty with everyday tasks such as cooking, shopping and managing money
• A higher risk of falls and injury because of poorer sight
• Charles Bonnet syndrome — seeing things that are not there, which is common with sight loss and usually harmless
• Low mood, anxiety and loneliness

Long-term outlook

The picture is more hopeful than headlines sometimes suggest. Most people with AMD keep their side vision and stay independent, especially with the right support and aids. Treatment for the wet form can slow or stop worsening and sometimes improves sight. Research into AMD is moving quickly, with new treatments being studied all the time. And on the aspirin question, the evidence remains mixed — this is not a reason to panic or to change your medicines without advice.

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