We don't have to refer sunglasses in Pakistan just as a cool accessory, which is only suitable for the beach or a weekend out in the park. They are needed in any season when the sun is intense, including winter and any circumstance that involves long-term sun exposure.

The effect of ultraviolet radiation on the eyes

UV rays not only harm the skin but also on the eyes. Just as dermatologists recommend using sunscreen whenever we leave the house, ophthalmologists recommend using sunglasses in Pakistan whenever we spend time outdoors during periods of strong sunlight. These radiations do not affect us only when we look in the direction of the sun, their reflection in the sand or the snow has a harmful effect when the temperatures are shallow.

Studies by specialists at the National Eye Institute in the United States show that prolonged exposure to the sun can lead to eye conditions such as cataracts or macular degeneration. In the case of cataracts, the National Eye Institute points out that exposure to UV rays is caused by 20% of cases.

Although we are warned from an early age not to look directly at the sun because we risk losing our visual acuity, few of us know that short-term exposure to UV rays of very high intensity is equivalent in effect to that caused by exposure to UV rays of average strength, but day by day. Another recommendation of Pakistani ophthalmologists is to avoid exposure to the sun between certain hours of the day when the sun is intense - between 10.00 and 16.00.

UV radiation primarily affects the cornea and can even cause a corneal burn, medically called photokeratitis, which is manifested by inflammation of the cornea, causes severe pain and leads to temporary vision loss. And the conjunctiva, the membrane that lines the eyelids, suffers from ultraviolet rays, the diseases of the conjunctiva caused by the sun's rays are the plexus and the pterygium.

We cannot always protect ourselves from the sun's rays, mainly since they also contribute to the production of vitamin D, but we must learn to enjoy its benefits and avoid harmful effects on the skin and eyes. Another important aspect is the protection of the eyelids, their skin is susceptible, and UV rays can cause severe dermatological diseases (carcinoma, melanoma). Sunglasses also protect the eyes and the skin around them.

And when we talk about the health of our eyes, the proverb that it is better to prevent than to treat shows its veracity. And when prevention is only about wearing an elegant accessory, it's even more comfortable.

Which sunglasses protect you the best

Aesthetic criteria are not the only ones that matter when choosing a pair of sunglasses, although they take precedence most of the time. Much more important than their appearance, and the way we look when we wear them is the lens's material.

A pair of sunglasses offer a significant level of protection; some models only have a colored lens without really protecting against the sun. Moreover, colored lenses without UV protection cause the pupil to dilate, and the sun's rays have an even more harmful effect on the eyes.

The amount of light transmitted through the lens is also an essential factor in choosing sunglasses, for intense sun opts for category 3 - 8-18%. The data related to the light transmitted through the lens can be found on the arm of the glasses.

It is recommended to choose only lenses that block 100% (400 nm or 400UV) between UVB and UV rays. Most of the sunglasses you find have this degree of protection and completely block this radiation. It is advisable to opt for polarized lenses, which have applied a particular layer that reduces sunlight, and the colors seen through these lenses are clearer.

The size of the sunglasses is also important. The large ones are recommended to the detriment of the small ones because they offer increased protection to the eyes and skin. A pair of sunglasses like the one Audrey Hepburn wore in the famous movie "Breakfast at Tiffany's" are perfect for protecting your eyes, and they are also incredibly chic.

Sunglasses suitable for face shape

Because we also talked about Audrey Hepburn about the "fashion" aspect of glasses, we must mention one of the most important criteria for choosing them: their design. As much as we care about the protection they offer us, the more we care about how we look when we wear them.

Before you start looking for a pair of sunglasses, you need to be guided by the right design for your face's shape. Although there is no rule in this regard and you can choose only according to your tastes, there are some general lines that we should follow when choosing sunglasses.

The shape of the face should contrast with the form of the glasses. On a round face, square glasses fit best, on square ones round glasses, and a heart-shaped face has the advantage of "cat-eye" glasses. Wayfarer or aviator sunglasses Pakistan will benefit you if you have an elongated look. People with an oval face are the luckiest from this point of view because they are suitable for any glasses.

If I still haven't convinced you of this accessory's usefulness, maybe a study by British researchers will do it. They concluded that sunglasses make us more attractive because they hide small flaws in the face and make our look more symmetrical, so we have an extra reason to protect our eye health