Designer sunglasses are must-have fashion accessories in the summertime, but they also serve the more important function of preventing the direct impact of UV light in your eyes and reducing the risk of eye damage. Like how sunscreen keeps our skin safe from the sun’s harmful rays and helps prevent skin cancer and premature ageing, sunglasses keep us safe by minimising the risk of UV light in the eyes. Long exposure to the sun’s UV light has effects on the eyes, potentially causing structural eye damage (1) and, in some cases, vision impairment. Children are at a high risk of exposure to the sun’s UV light, especially in areas prone to increased sun reflection, such as beaches or snowy areas. This makes it crucial for you to understand the UV light’s effects on the eyes to protect your and your child’s vision in the long run. Without adequate protection, potential damage to the eye can include corneal inflammation, cataracts, pterygium, and cancer.

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The power of magnification for a compound light microscope is the product of the power of magnification of the ocular lens and the power of magnification of the objective lens.

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So, is UV light safe for your eyes? In short, no. UV radiation, be it natural sunlight or artificial rays, can damage the eye's surface tissues as well as the cornea and lens (2). In fact, all three types of UV light have different adverse effects on the human body, especially the human eye:

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Ultraviolet light and radiation come from two sources. The primary source of earth’s UV light — the sun — emits a range of wavelengths known as the electromagnetic spectrum. UV lights appear in the middle of the spectrum between visible light and X-rays and are split into three main types, including UVA, UVB and UVC.

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The easiest way to prevent the damage caused by UV light in your eyes is by limiting your exposure to it. The higher the exposure, the more are the chances of eye conditions caused by UV radiation. Here are a few simple methods you can follow to keep your eyes protected from UV light:

UVB is the type of radiation that causes cataracts — opaqueness that forms in the eye’s lens and hinders vision, similar to looking through a dirty window. Cataracts commonly occur among older people as a result of ageing and prolonged sun exposure. When cataracts become severe, surgery is usually necessary — the lens is replaced by an artificial one in order to restore vision.

Artificial sources ofUV light

A few specialty glues set up and harden quickly when exposed to ultraviolet light. They're good for attaching hinges to glass. December 2, 2006.

Natural sources ofUV light

Yes, UV light can damage your eyes. Accordingly, all UV light products are manufactured under strict compliance and regulations. If you think a UV bulb may be having issues, make sure to never look at it directly while it’s switched on and contact the manufacturer or a specialist for any repairs or faults. In case you have come in direct contact with UV light bulbs, contact our team of optometrists immediately for insurance-covered eye tests and aftercare processes.

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So, if you have any queries about if you need glasses, getting over your fear of eye tests or how we can help you prepare for an eye test, get in touch with our team of eye experts today.

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If you notice any signs of eye strain after exposure to a UV light source or are facing issues due to digital blue light syndrome, it’s best to book an eye test. This will help prevent it from escalating into more severe eye problems in the future.

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Sources ofUV lightat home

You must be careful when choosing sunglasses for children as some may be toy glasses and won’t provide the required UV protection. You should always check that the sunglasses comply with the respective eye protection standards. Your optometrist can provide you with the best advice on getting prescription or non-prescription sunglasses as per your respective needs.

Yes. Children should definitely wear sunglasses. They’re especially at risk due to the time spent doing outdoor activities. It’s the parents’ responsibility to ensure their children are protected from UV radiation with simple methods like sunscreen, sunglasses and appropriate attire.

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The cornea absorbs most of the UV radiation striking the eye, but the high levels of UV experienced in the snow or beach can cause inflammation. The condition is very painful, causing the eye to be highly sensitive to any light source. This condition normally resolves in 48 hours, but it’s advisable to visit an optometrist for an eye examination to ensure no further damage has taken place.

The main secondary sources of UV radiation are tanning lamps, high-intensity mercury vapour lights, halogen lights, welding arcs, and lasers. Since this initial study was carried out, we have also broadened our understanding of the irreversible effects of UV light on the eyes and have globally recognised the need for UV-protected sunglasses, whether outdoors or handling sensitive equipment.

While most of the sun’s UV radiation is absorbed by the ozone layer, a scientific study has highlighted the need for wearing sunglasses due to atmospheric changes and the depletion of the ozone, leading to an increased level of UV radiation on the earth (3).

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The intensity of light that is allowed to pass through the filter depends on the angle between the filter and wave's polarisation axis.

The conjunctiva can be damaged when exposed to UV radiation on a short-term basis. It can thicken by forming a fleshy growth known as pterygium if exposed long-term. The condition progresses gradually with the pterygium growing, which starts to cover the cornea, causing vision disturbances. Treatment for this condition is surgical removal. An eye expert needs to differentiate between pterygium and other growths during this process.

Not only is constant exposure to UV light bad for your eyes and vision, but it’s also a dangerous cause of blindness, cataract and other sight-based conditions. Some common symptoms for UV light exposure to the eyes include:

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At 1001 Optical, we specialise in eyewear and eye care products you need to live your best life. With over 25 years in operation and connections with leading global brands, we are dedicated to delivering top-quality products directly to your door. We have an expansive range of contact lenses, reading glasses, and sunglasses, all of which are carefully selected by professional optometrists and eyewear experts.