Most people know that too much sun exposure can damage their skin, but many don’t realize it can also harm their eyes. Ultraviolet (UV) rays from the sun can contribute to several eye problems over time, including cataracts, damage to the retina, and other vision issues.

The good news is that protecting your eyes is simple. By understanding how UV rays affect your eyes and taking a few precautions, you can help preserve your vision for years to come.*

How Does Sun Exposure Affect Your Eyes?

Sunlight contains invisible UV radiation. While you can’t see or feel UV rays, your eyes are exposed to them whenever you’re outdoors.

There are two main types of UV rays that can affect your eyes:

UV-A Rays

UV-A rays penetrate deeper into the eye and may contribute to damage in the retina, including the macula. The macula is responsible for the sharp central vision you use for reading, driving, and recognizing faces.

UV-B Rays

UV-B rays primarily affect the front structures of the eye, including the cornea and lens. Long-term exposure has been linked to conditions such as cataracts and other eye surface problems.

It’s important to remember that UV exposure doesn’t only come directly from sunlight. UV rays can reflect off surfaces such as:

• Water
• Sand
• Snow
• Concrete
• Glass
• Metal

This means your eyes may be exposed even when you’re not looking directly at the sun.

Who Is Most at Risk for UV-Related Eye Damage?

Everyone benefits from protecting their eyes from UV rays, but some people may face a higher risk of sun-related eye damage.

You may be at increased risk if you:

• Spend long periods outdoors for work or recreation
• Live in sunny climates or at higher elevations
• Participate in activities near reflective surfaces, such as boating, skiing, fishing, or going to the beach
• Have had cataract surgery
• Have certain retinal conditions or other eye diseases
• Take medications that increase light sensitivity

Some medications that may increase sensitivity to sunlight include:

• Certain birth control pills
• Diuretics (water pills)
• Some antibiotics, including tetracycline
• Certain sulfa medications
• Some anti-anxiety medications and tranquilizers

If you’re unsure whether your medication increases sun sensitivity, ask your doctor or pharmacist.

People living with glaucoma should also discuss eye protection with their eye care provider. While UV exposure is not considered a direct cause of glaucoma, protecting overall eye health remains an important part of preserving vision.

Simple Ways to Protect Your Eyes from UV Rays

Protecting your eyes doesn’t require expensive equipment. A few simple habits can make a big difference.

Wear UV-Blocking Sunglasses

Not all sunglasses provide the same level of protection. When shopping for sunglasses, look for lenses that block:

• 99% to 100% of UV-A rays
• 99% to 100% of UV-B rays

Larger lenses or wraparound styles can provide additional protection by reducing UV exposure from the sides.

The darkness of the lens does not determine UV protection. Always check the label to make sure the sunglasses provide adequate UV blocking.

Wear a Hat with a Wide Brim

A wide-brimmed hat can significantly reduce the amount of UV radiation reaching your eyes. Combining a hat with sunglasses provides even better protection than either one alone.

Consider Protective Lens Options

Many prescription and non-prescription lenses now include UV protection. Options may include:

• UV-blocking lens coatings
• UV-blocking lens materials
• Photochromic lenses that darken outdoors

If you wear glasses regularly, ask your eye care professional whether your current lenses provide UV protection.

Protect Your Eyes Year-Round

Many people think about sun protection only during the summer, but UV exposure occurs throughout the year.

In fact, snow can reflect a significant amount of UV radiation, increasing exposure during winter months. Cloudy days can also allow UV rays to reach your eyes.

Making eye protection a daily habit can help reduce your lifetime UV exposure.

Why Eye Protection Matters

The effects of UV damage often build up slowly over many years. You may not notice any immediate symptoms, but repeated exposure can increase the risk of certain eye conditions later in life.

Fortunately, protecting your eyes is one of the easiest ways to support long-term vision health. Wearing UV-blocking sunglasses, using a wide-brimmed hat, and talking with your eye doctor about the best protective eyewear can help keep your eyes healthier at every age.

If you have glaucoma or another eye condition, ask your eye care provider whether there are additional steps you should take to protect your vision while spending time outdoors.

*Prevent Blindness. (Accessed on May 2026) “Your Sight: Protect Your Eyes from the Sun.” preventblindness.org

The information provided by The Glaucoma Community is for educational purposes only and does not replace professional medical advice. Always talk with your healthcare provider before making changes to your treatment or care. The Glaucoma Community does not endorse specific treatments, providers, or products.