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Life And Style Through The Eyes Of An Optometrist

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How To Protect The Eyes From UV Damage All Year Round

  • 7 July 2019
  • 2 comments
  • 3K views
  • Elizabeth
protect eyes from UV damage all year round

Face a Face eyewear

The Eyes And UV Damage

Ultraviolet (UV) radiation is present all day, all year round, in both sunny and overcast conditions. It can harm the eyes and cause damage and premature ageing to the surrounding skin. The eyes are the only organs to let light penetrate the body and humans evolved to protect them against the sun’s harmful effects. They are recessed within the head and shielded by the brow ridge, the eyebrows and the eyelashes. The pupil constricts in bright light and the squint reflex minimizes penetration of the sun’s rays into the eye.

Sunlight contains ultraviolet, visible and infra-red radiation. It is the bright visible light that activates these protective mechanisms, so on a cloudy day these protective, natural defences might not be very effective. However, UV levels can still be high, so it is vitally important to protect the eyes from UV damage all year round, rain or shine.

There is a well-known link between excessive sun exposure and skin damage. Perhaps less known is how sunlight, more specifically, UV radiation can damage the eyes. There are three categories of UV radiation: UVA (320-400nm), UVB (290-320nm) and UVC (100-290nm). The earth’s ozone layer absorbs almost all incident UVC, so the rest of this article refers to UVA and UVB.

Sunburn: Photokeratitis and Photoconjunctivitis.

Keratitis describes an inflammation of the cornea, (the clear dome-shaped lens that covers the iris and pupil). Conjunctivitis refers to an inflammation of the conjunctiva, (the clear membrane that covers the front of the eye and that lines the inside of the eyelids). Photokeratitis and photoconjunctivitis are inflammatory reactions caused by light, just like sunburn. Snow-blindness is an extreme version of this. The signs and symptoms of a sunburned eye include grittiness, redness, photophobia, excessive watering and blurred vision. Although these painful conditions usually resolve within two days, it is infinitely better to prevent this and to protect the eyes from UV damage.

Pterygium

A pterygium is a common, fleshy, benign growth on the cornea, linked to prolonged UV exposure. It is therefore, more likely to affect those that live in a hot climate or that work outdoors (in any climate). Pterygia tend to become inflamed and they can extend over the centre of the cornea, ultimately interfering with vision.

Cataracts

According to the World Health Organisation, (WHO), cataract is the most common cause of blindness in the world. It is the progressive clouding of the crystalline lens within the eye. Usually, it is a normal part of the ageing process of the eyes. However, evidence suggests that between 10 and 20% are caused by overexposure to UVB, therefore, they are preventable. (NB other causes of cataract include congenital, traumatic and genetic. These are not attributable to UV exposure and are not preventable)

Macular Degeneration

Age-related macular degeneration, (AMD), is caused by damage to the retina over time. The retina is the light-sensitive part of the eye where images are formed and transmitted to the brain. The macula is the central and most sensitive part of the retina. It is responsible for seeing in detail and in colour. The main risk factor of AMD is age. Although further research is necessary,  some studies point towards UVA and HEV, (high-energy visible or blue-violet light) as potential causes. Other possible risk factors include smoking and genetic tendendancy.

Eyelid Cancers

Cancers of the eyelid account for 5-10% of all skin cancers. Most occur on the lower lid which gets the most exposure. Basal Cell Carcinoma (BCC) is the most common of these. BCC is slow-growing and rarely spreads to other parts of the body, but it is locally invasive. Consequently, it can cause major disfigurement to the eye and face. Squamous Cell Carcinoma (SCC) has a faster growth rate and a greater potential to spread to other parts of the body than BCC. Cumulative exposure to UV is a known risk factor in both of these types of cancer.

Malignant Melanoma is a type of cancer that develops in the cells that produce melanin — the pigment that gives the skin its colour. There is a high correlation between melanomas and a history of intense, intermittent sun exposure and sunburn.

Early warning signs include:

  • Persistent lumps or bumps that frequently bleed.
  • Inflamed eyelids
  • Lesions that have an irregular border or that become larger or more elevated
  • An unexplained loss of eyelashes.
  • A change in the shape of the pupil.

Intraocular Cancer

Melanomas can occur inside of the eye too and they can be difficult to detect. Signs and symptoms include:

  • A sensation of flashes or specks of dust in the vision (floaters).
  • A growing dark spot on the iris.
  • A change in the shape of the pupil.
  • Poor or blurred vision in one eye.

Please visit your optometrist or general practitioner if you experience any signs or symptoms mentioned in this article.

Protect The Eyes From UV Damage All Year Round

A pair of good quality sunglasses is one of the best defences against eye and eyelid damage. The colour and depth of the tint are unrelated to the amount of protection the lenses afford. The important thing to look for is the “UV 400” mark. Lenses marked as such will absorb or block light with wavelengths up to 400nm. Make sure the sunglasses have a CE mark too to be sure they conform to European standards. The sunglasses should be large enough to shield the eyes and surrounding areas; a wraparound style is ideal.  A hat with a brim of eight centimetres or more will block as much as half of all UVA and UVB rays too.

How to protect the eyes from UV damage all year round

protect the eyes from sun damage

But what about on a dull day when sunglasses and a wide-brimmed hat would look out of place?  UV radiation is still present and therefore harmful. How can we protect our eyes from UV damage on a overcast day? ZEISS has recently launched an award-winning solution.

Zeiss UVProtect

Estimates suggest that up to 70% of the UK population wears prescription glasses.  The industry standard is to provide protection against UV rays up to 380nm, yet experts recommend the need for protection to be at 400nm as the small gap between the two figures is where the rays are at the most damaging. ZEISS recognised this and launched UVProtect lens technology. It offers full UV protection up to 400nm, in a clear plastic spectacle lens, without any compromise in clarity. It has been incredibly well-received and it won the coveted “Product of the Year” award at the AOP awards, held during 100% Optical, in January. I’m an AOP awards judge in a different category, so I was there when it won. I’ve been very interested ever since.

 

protect the eyes from UV damage

The feedback is excellent. ZEISS carried out a wearer trial in 2018. 95% were satisfied with the clarity and aesthetics of ZEISS UVProtect lenses. Not only that, a recent survey found that 88% of spectacle wearers think it’s important to protect the eyes from UV and that a sunglass-level of UV protection in clear spectacle lenses would be beneficial.

How to protect the eyes from UV damage all year round

ZEISS have raised the standards of eyecare with this new technology. It is outstanding and innovative and most importantly, it helps to protect the eye and surrounding area from potential sight and even life-threatening conditions, as well as premature ageing to the skin around the eyes. Think of it as equivalent to wearing a daily moisturiser with an SPF.

protect the eyes from sunlight

For more information, contact your local ZEISS optician and visit ZEISS.co.uk/vision-care.

How to protect the eyes from UV damage all year round

Further Reading

  • AOP: ZEISS Has Raised Its Standard Of Eyecare And Differentiated Itself
  • Skin Cancer Foundation: Your Eyes’ Best Defense
  • Ultraviolet Radiation and Sunglasses: How To Protect Your Eyes
  • World Health Organisation: The Known Health Effects of UV
  • World Health Organisation: Priority Eye Disease
  • What Lizzy Loves: Berlin. Forty Hours Of Fun And Future Trends With ZEISS
  • ZEISS: Full UV Protection In Clear Lenses

My eyewear is Bocca Night by Face a Face with ZEISS Individual varifocal lenses with UVProtect. UVProtect comes as standard across the range of ZEISS lenses at no extra cost.

Disclosure:

Like many bloggers and content creators, I use affiliate links. I identify these with an asterisk. I identify gifted items within the body of the post. I am a paid ambassador for STEPPER Eyewear and for MAC Eyewear. For links to my current clothes, accessories and homeware, click here. Thank you for reading

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2 comments
  1. Lisa the Sequinist says:
    8 July 2019 at 9:28 am

    I have such light sensitive eyes, so I can only imagine that the actual cornea and everything else in my eyes is sensitive too. This is such a great idea to include UV protection in our clear lenses. I’ll definitely make sure my next pair of glasses have that! I only want to have YOU help me with glasses though, maybe I’ll take a train from London up to you one day to do that! Thank you for the education, Liz! xx

    Reply
    1. elizabeth says:
      17 July 2019 at 12:33 pm

      Yes, you need to pay me a visit here for all sorts of reasons. Having sunglass level of protection in a clear lenses is brilliant. It takes all of the worry away and means we don’t need to give it any more thought. Writing and researching this article has reminded me too that I need to be extra vigilant. And I really should have known better! Lots of love xxx

      Reply

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