Why your eyes need UV protection

Sunglasses are often chosen for how they look, but the right pair does far more than complete your style. A well-chosen pair helps protect your eyes from harmful ultraviolet (UV) rays, while also making your vision feel more comfortable in bright conditions.

Understanding how UV light affects your eyes, and what to look for in your lenses, can help you make more informed choices about your eye health.

If you are exploring lens options, it may also be helpful to understand how tinted lenses improve comfort and clarity in bright environments.  

What makes a great pair of sunglasses and prescription sunglasses?

Not all sunglasses protect your eyes in the same way. While many lenses reduce brightness, true protection comes from how effectively they block harmful UV rays.

Features such as UV400 protection ensure that your eyes are shielded from both UVA and UVB rays, helping to protect your long-term eye health while improving day-to-day comfort.

Whether you wear sunglasses occasionally or every day, the right lenses can make a meaningful difference to how your eyes feel and how clearly you see.

Explore how UV400 sunglasses protect your eyes.

What are the dangers of UV exposure on your eyes?

Many people are aware of how UV rays affect the skin, but fewer realise the impact they can have on the eyes.

Our eyes are highly sensitive to UV exposure, and over time this can contribute to long-term eye health concerns. UV rays are present all year round, even on cloudy days, meaning your eyes may be exposed more often than you expect.

UV light can also reflect off surfaces such as roads, pavements, water and glass, increasing the amount of exposure your eyes receive. This reflected light can feel just as intense and carries the same long-term risks.

Understanding UVA and UVB rays

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

• UVA rays are present throughout the year and are linked to longer-term changes in eye health, including conditions such as cataracts and macular degeneration, and can also seriously damage the delicate skin around your eyes.  
• UVB rays are more intense and can affect the surface of the eye and surrounding tissue. They are necessary in small quantities to help support vitamin D production, but overexposure can also contribute to sunburn, premature skin ageing and skin cancer.

Both types of UV radiation can impact your eyes, which is why consistent protection is important, even when it does not feel particularly bright.

Children’s eyes are especially sensitive to UV exposure, making early protection an important part of long-term eye health.

Why UV protection matters for everyday comfort

UV protection is not only about long-term eye health, it can also make a noticeable difference to how your eyes feel day to day.

Bright light and glare can lead to discomfort, squinting and visual fatigue. For some people, this may also contribute to symptoms such as eye strain or sensitivity to light.

Choosing the right lenses can help reduce glare, soften brightness and create a more comfortable visual experience.

• Tinted lenses help reduce overall brightness and improve comfort.
• Polarised lenses reduce glare from reflective surfaces, particularly when driving.
• Photochromic lenses adapt to changing light throughout the day.

Compare tinted vs polarised vs photochromic lenses to find the right option for your lifestyle.

How can you best protect against UV damage?

When choosing sunglasses, comfort, protection and suitability should all be considered together.

• Look for lenses with UV400 protection or that are that are CE-marked to ensure your eyes are fully protected. At Leightons we only stock sunglasses that offer a minimum of 99% protection. Our team can recommend high quality UV400 sunglasses from brands like Maui Jim.
• Wear sunglasses as often as you can outside so choose sunglasses that feel comfortable and suit your day-to-day activities.
• Consider frames that provide good coverage to reduce light entering from the sides.
• Think about how you use your vision, particularly if you spend time driving or outdoors.
• Children need sunglasses too! Make sure any kids sunglasses are properly UV rated, as many toy sunglasses don’t offer adequate protection 

Explore how to choose your sunglasses lenses and understand which options best suit your lifestyle, from everyday wear to driving and outdoor use.

Do you need prescription sunglasses?

If you rely on glasses to see clearly, switching to standard sunglasses can mean compromising your vision. Prescription sunglasses allow you to enjoy clear, comfortable sight outdoors, while protecting your eyes from UV exposure, without the need to switch between pairs. 

They can also be combined with options such as tints, polarisation or photochromic technology, depending on your lifestyle and visual needs.

Most prescriptions can be adapted for sunglasses, although suitability may vary depending on your lens type and frame choice. Our team will guide you through the options to find what works best for you.

Finding sunglasses that feel right for you

The best sunglasses are the ones you will wear consistently. They should feel comfortable, support your vision, and suit your lifestyle without compromise.

At Leightons, we take the time to understand how you use your eyes and what feels most comfortable for you. From there, our qualified dispensing opticians guide you through the most suitable lens options, helping you find a pair that supports both your vision and long‑term eye health.

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