In this article, we are going to find out how to protect your eyes and why “dark” and “sunscreen” are not the same thing.
Research: Protect Your Eyes with Sunglasses
There are a lot of pleasant words about summer: holidays, end of the classes, seaside, sand beach, ice cream, fun, sunlight and so on. However, this time may be harmful to your health because of ultraviolet rays. We always protect our skin but forget about eyes. A few people are buying different sunglasses to help their eyes. Glasses gained the status of a fashion accessory long time ago. Sometimes we forget that we really need sunglasses: our eyes, like nothing else, should be protected from rays, dust, and other factors. If you care about this issue, you may write an essay on this topic and it will be useful not only for your grades but for understanding the processes that happen in your body. There is a research below on why it is necessary to take care of eyes in summer.
Why Is the Sun Dangerous for the Eyes?
ln the essay, it is important to introduce the context to the reader and describing why sunlight is dangerous, it is worth remembering that the solar spectrum includes ultraviolet, visible and infrared radiation. Infrared radiation does not do any harm to the eyes, but ultraviolet and visible radiation can cause troubles. Ultraviolet rays damage different biological molecules, including protein and DNA. If collagen is damaged (it is also a skin protein), the processes usually associated with aging are accelerated, as well as in the case of a breakdown in the structure of DNA oncological diseases, including melanoma, can appear. This also applies to the eyes: the risks associated with excessive sunlight cover both the acceleration of the central parts of the retina, which leads to poor eyesight, and an eye melanoma – a rare but lethal tumor that is currently incurable.
And this is not all: the ultraviolet can lead to the inflammation of the cornea, burns of the conjunctiva and cornea, a retinal burn (a significant dilatation of the pupil behind the dark glasses), solar retinopathy and dry eye syndrome. As for the visible radiation, it can worsen the visual acuity and provoke the symptoms of visual fatigue. Finally, for certain sports, it is important to protect the eyes mechanically. If a person suffers from seasonal allergies or just has sensitive eyes, then eyes should be protected from pollen and dust.
How Can the Glasses Help?
Of course, in the essay you must give some arguments that compliment your point of view. When it comes to this topic, you have to make a little research. For example, lenses of quality glasses can be made of glass or polycarbonate. You may compare two materials for glasses, show their pros and cons, and give some examples. Each of these materials has advantages and disadvantages, but both reliably block ultraviolet radiation. Glass is more difficult to scratch, besides it is still the most transparent material, it is still used in microscopes, cameras or binoculars. On the other hand, the glass itself does not block ultraviolet radiation of type A, so the glasses require an additional coating. In addition, such glasses are heavy and can break.
Polycarbonate lenses are ten times stronger than glass or ordinary plastic, which makes them ideal for children and sportsmen. They are lighter and thinner than glass ones and block 100% of ultraviolet radiation. On the other hand, polycarbonate is easy to scratch and it is not as transparent as glass – it happens that objects in such glasses seem to be not clear-cut. There are other materials for special glasses – for example, shockproof Tribrid and Trivex, lenses of which are inserted in glasses for skiing or snowboarding.
Additional protection from ultraviolet provides either coating or the addition of certain chemicals in the glass or polycarbonate at the manufacturing stage. Although the material itself blocks the ultraviolet, in the darkened glasses, the eyes are more comfortable – they are less tired from the rays of the visible spectrum. The darker the lenses are, the more suitable they are for sunny days – and vice versa, in yellow or pink glasses it will be pleasant in cloudy or foggy weather.
The Level of Protection
You also may add some theory about levels of defense and some information about how it works. Lenses in terms of protection are divided into five types: very light pass 80-100% of the light and are suitable for use in the city in cloudy weather, and the dark pass only 3-8% of the light and can be used, for example, high in the mountains. For a trip to the sea, lenses that pass 18-43% of light are suitable. Glasses should be absolutely transparent so that they clearly distinguish objects at different distances. On the good glasses, there is always a label that shows the percentage of UVA and UVB blocking and the protection category.
There are photochromic lenses, which are also called “chameleons” – they react to the intensity of light and change the degree of darkening, becoming dark in bright sunlight and almost transparent in the room. However, these glasses need to be changed regularly because the photochromic “agents” quickly run out and the dimming becomes weak.
Cheap Glasses or Quality Ones?
Of course, a good essay requires a comparison of two options. If it comes to the glasses and protection, we have two opportunities – cheap and expensive. So why not to study this question? It is almost impossible to verify the authenticity of protection against ultraviolet in a showcase with glasses – a person has to rely on the label. It should indicate the presence of a blocking of UVB and UVA – however, the additional difficulty is that the standards of marking are not mandatory, and in many countries, the manufacturer decides whether to follow them or not. One of the exceptions is Australia and New Zealand, where the risks of insolation are particularly serious, and any sunglasses should be tested and labeled in accordance with the mandatory standard.
Add your personal attitude to the issue. Maybe you have used different glasses and you have something to say about this question basing on your personal experience. Whatever it was, it is better to choose glasses that show the maximum level of protection. Sometimes on the label, it is written that the glasses do not transmit light with a wavelength of up to 400 nm – this is a full block. There can be the European standard (CE) with figures 0, 2, 6 or 7, where 0 is zero protection, and 7 is full protection. If you have an ultraviolet lamp, then you can conduct a simple check: shine the lamp through the glasses on the money. If the lens material does not pass the ultraviolet, you will not see the watermarks.
So, in the conclusion, you need to show how this research affected you and your personal thoughts. Also, take care of yourself and protect your eyes in order to feel summer without bad consequences. By the way, for more interesting articles, visit our site someone write this essay for me Have fun and be ready for the next semester!