Philip Walsh - Can contact lenses protect against ultraviolet (UV) light?

Ultraviolet radiation comes from the sun and affects the body in different ways, including the sensitive eye area. There are two types of UV light - UVA and UVB. UVA penetrates the skin at a deeper level than UVB, but both forms can lead to premature signs of ageing in the skin as well as significant eye damage.


How does UV light affect the eye?
When ultraviolet radiation hits the surface of the eye, it is focused and concentrated by the cornea. The rays are directed through the pupil and absorbed into the eye lens. Excessive exposure to UV radiation in the eye area can lead to changes in the tissue and even conditions such as cataracts.

The unprotected eye is exposed to UV light from all angles, so it is important to protect your eyes from the sun in order to prevent the potential for radiation-related damage.


Can contact lenses protect against UV?
Specsavers offers a range of contact lenses that have been created with some protection against UV radiation. These contacts come with a special filter to block UV light from entering the inner parts of the eye, including the cornea, iris, lens and retina.

These contacts may be particularly useful for those who are regularly exposed to sunlight, either because they live in a sunny climate or their occupation requires them to spend the majority of time in the outdoors.

However, it is important to note that these types of contacts aren't enough for complete eye protection, as they will not block all forms of UV light. Wearing sunglasses should fully protect your eyes when you are out in the sunlight. Wraparound-style sunglasses are best, as UV rays can still slip past other forms of sunglasses.

Talk to your local Specsavers optometrist to find out more about the range of contact lenses with UV protection and what more you can do to shield your eyesight from UV related damage.

Visit www.specsavers.co.nz to book your next appointment.