If you're taking metformin and have noticed blurred or changing vision, you may wonder whether the medicine could be affecting your eyes. Metformin is not recognised as a medicine that directly damages the retina, and changes in sight are often more closely related to diabetes itself or fluctuations in blood glucose. Research has also explored whether metformin may be associated with a lower risk of some eye conditions, although this does not prove that it directly protects your eyes. If

If you've recently started ADHD medication, or your dose has changed, you may wonder whether blurred vision or other changes in your eyesight could be related to the medicine. Some ADHD medicines can affect focusing, pupil size or eye comfort, although these symptoms do not necessarily mean that your eyes have been damaged. You should tell your clinician if visual symptoms persist or worsen. Seek urgent medical attention if you develop severe eye pain, a painful red eye or sudden

If you've recently started topiramate for epilepsy or migraine prevention, you may not expect the medicine to affect your eyesight. Serious eye problems are rare, but topiramate can occasionally cause a sudden increase in short-sightedness and secondary angle closure, which needs urgent assessment. You may notice sudden blurred vision, eye pain, redness, headache, nausea or coloured haloes around lights, particularly during the first few weeks of treatment. These symptoms can occur when fluid and swelling inside the eye push the

If you're taking tamoxifen as part of breast cancer treatment or to reduce your risk of breast cancer, you may wonder whether it could affect your eyesight. Most people do not develop serious eye problems, but tamoxifen can cause changes in the retina, lens or cornea, while problems affecting the optic nerve are much rarer. Some retinal changes can affect the macula, which is responsible for your detailed central vision, and may cause blurred or distorted sight. Your risk may

If you take amiodarone for a heart rhythm problem, you may wonder whether the medicine can affect your eyesight. It can cause changes in the eyes, but the most common are tiny corneal deposits, known as cornea verticillata, which are usually harmless. You may have no symptoms at all, although some people notice mild blurred vision or coloured haloes around bright lights. A much rarer concern is amiodarone-associated optic neuropathy, which affects the optic nerve and can reduce vision, alter

Yes, sildenafil can sometimes affect your vision. You may notice temporary blurred vision, increased sensitivity to light or changes in how you see colours after taking it. These effects are usually short-lived, but rare and more serious eye problems have also been reported. Mild, temporary colour changes are usually not a sign of permanent eye damage, but you should seek medical advice if they are severe, unusual or persist after the medicine has worn off. Sudden vision loss or another

Yes, some blood pressure medicines can affect your eyesight, although the effect depends on the medicine you take. You may notice blurred vision, visual changes or dry eyes, particularly if your blood pressure falls too low, but these effects do not happen to everyone. You should not assume that your medication is always responsible for a change in your sight. High blood pressure can also damage the blood vessels at the back of your eyes, while sudden or persistent blurred

Yes, antihistamines can make your eyes feel dry and may sometimes cause blurred vision. If you take them for allergies and notice dryness, grittiness or discomfort, your medicine could be contributing to the problem. You may notice these effects because antihistamines can reduce moisture and tear production. If your vision stays blurred, your eyes become painful or your symptoms are significant, you should speak to your doctor or eye specialist rather than assuming your antihistamine is the only cause. Why

Yes, isotretinoin can contribute to dry eyes. It can reduce oil production from the meibomian glands in your eyelids, which may cause your tears to evaporate faster and leave your eyes feeling dry, gritty or irritated. You may notice that contact lenses, screen use or windy conditions become more uncomfortable while taking isotretinoin. If your symptoms are persistent or troublesome, speak to your dermatologist, GP or an eye specialist for advice. Why Can Isotretinoin Make Your Eyes Feel Dry? Isotretinoin

Antidepressants can affect your eyes and vision, although the effects vary between medicines and individuals. You may notice dry or irritated eyes, blurred vision or temporary focusing difficulties, while serious eye problems are much less common. Some antidepressants can affect your tear film, focusing ability or pupil size and, in people with certain eye anatomy, may rarely contribute to acute angle-closure glaucoma. If you develop mild dryness or temporary blurred vision after starting treatment, If you develop mild dryness or