For office
Modern computer technologies are firmly entrenched in our lives. And the load on eyesight increased during this time several times. Many computer users complain about eye fatigue, their redness, dryness, blurred vision, headaches. All these are signs of a computerized visual syndrome. Frequent complaints about the physiological condition come from contact lens lovers. With prolonged use of the monitor, the frequency of blinking decreases, causing the eye and contact lens to dry out. There is a feeling of discomfort, a desire to remove contact lenses and return forever to points. Some relief can be given by special moisturizing drops. It turns out, wearing glasses in the office is more logical. If you experience severe pressure on the bridge of the nose and fatigue of the eyes, you can remove the glasses, lean back in your chair and let your eyes rest, which will not work if you are in contact lenses. American scientists from Washington are engaged in the development of lenses with embedded microcircuits. This filling will allow contact lenses to magnify objects and display various data about them on the lens. In the near future the novelty will appear in stores. By the way, depending on glasses or contact lenses does not happen! All this is nonsense!
For comfort
And behind the glasses, and behind the lenses need appropriate care. The latter should be stored in a special container, each time changing the solution. The glasses need to be wiped, often enough so that they do not have dirt and stains on them, and to see if the glasses were scratched - in this case, the lenses have an obvious advantage. There are different types: one-day, two-week, half-yearly. It is very convenient in the morning, along with the reception, for example, of a multivitamin complex, to get a lens from the blister and put it on, and in the evening to remove and discard. Unlike long-use lenses, there is no need to store them in special containers, to acquire solutions. In addition, over time, long-wearing lenses lose some of their optical properties, they are scratched, in which so-called detritus-mucus is accumulated with dead cells of the eye surface that have been deflated, and not all solutions with them can successfully cope. This increases the risk of infection. It is better to use disposable lenses.
For good health
If you have a cold, it's best to use glasses, because with respiratory diseases, there is a reactive swelling of the conjunctiva and the epithelium of the cornea due to a strong cough and runny nose. Also, glasses are necessary for conjunctivitis (infectious eye disease), so that purulent discharge completely leaves your eyes, and you do not become infected again.
For the image
Of course, with the help of glasses you can change the image, become a business lady, a pretty secretary or a strict teacher. But all the same, unlike lenses, they can not emphasize the natural beauty. If you have blue eyes, then you can make them green or brown. The "dark pool" of the eye, on the contrary, can be made much lighter. Alternatively, simply add saturation to your natural color. To do this, there are tinted contact lenses that can hide certain visual defects and favorably influence the perception of the eyes, depending on the image chosen by the patient. They will not change the color of dark or light eyes, but they will make the look brighter and add radiance. The cosmetic effect of these lenses may not be noticeable. If you are still afraid of wearing contact lenses because you do not want to see the world in blue or pink, calm down: this will not happen. Since the invention of color lenses, the technology of their production has changed significantly. Modern lenses, even with iris painted on them, give a natural image, since the colored lenses have a transparent central zone through which light penetrates. If the lens is tinted (completely colored in blue, blue, green or turquoise), then the color polymer fraction does not exceed 20%, which does not change the perception of coloring through such lenses. But not only the color of the eyes can change contact lenses. They can turn you into a zombie or an extraordinary person. Carnival lenses such as crazy and fun can do this. This is very handy for parties, where you can appear before your friends in a new unexpected way. Do not wear colored lenses for more than 12 hours: because of the hue they do not have very high oxygen permeability, and lenses like crazy - more than 4-5 hours. Their oxygen permeability is very small, they are not intended for permanent wearing with the purpose of vision correction. The figure is located, including in the optical zone of the lens, which worsens the visual perception. So wear them as rarely as possible, on the occasion.
For active recreation
If we talk about rest, especially on the beach, the choice is obvious - lenses. They will not fall out of sight when playing beach volleyball, with them you can observe all the beauty of the underwater world, if you wear a special swimming mask. However, if you are a follower of glasses, you can order special, anatomical forms. They are better fortified and do not fly off the eye with active movement, and you can observe the "secrets" of the depths, also without giving them up. Now special glasses for swimming with diopters have been developed. Since the birth of contact lenses, there are many rumors about them.
Myths about contact lenses:
1.If neither me nor the doctor has managed to put on a contact lens, I can never wear them. It is not true. You need to be patient, discard fear and try again to put on the lenses in the presence of the doctor. After several successful attempts, putting on the lenses ceases to seem particularly difficult, the eye will get used to manipulations. Sometimes the patient himself gets better to put on the lens, but the doctor usually helps by directing the patient's hand with the lens to the eye.
2.Contact lenses are harmful to the eye, because every time you put them on, you injure the cornea. Not really. It is believed that microtraumatic structures of the eye surface when wearing a lens takes place, but it is hardly necessary to talk about it, more precisely, about its any significant clinical significance when using lenses from modern materials. Current contact lenses do not injure the eye, they are a convenient and safe means of vision correction.
3.Contact lenses can lead to infection and eye diseases. Yes, it is possible, if microorganisms get into the eye with a lens. The causes of the appearance of microorganisms on the lens are associated with poor disinfection, contamination of the container, over-lapping of the lenses. To minimize possible infection, it is better to use one-day CL: in this case, each time a clean and fresh lens is put on the eye, and there are no solutions and containers - the main sources of infection.
4.If you wear lenses, you need to use special decorative cosmetics. Yes, this is so, when wearing lenses you need to use a special certified (usually on the packaging it is written "approved by ophthalmologists") and hypoallergenic cosmetics. It is not advisable to use mascara with special additives, such as threads or hairs of mink: they crumble and, getting on the lenses, cause unpleasant sensations.
5. I do not need contact lenses, because I use glasses only when I work at a computer and am at the wheel of a car. This is a great misconception. If you need glasses for certain activities, it means that you have poor eyesight. And it needs a constant practical correction. The absence of this leads to additional strain on the eyes and brain, contributing to further deterioration of vision. In addition, the use of contact lenses when driving a car does not narrow the field of view, there are no lateral aberrations, there is practically no reduction in objects due to the fact that the lens is a single optical system with an eyeball.
6. The lenses of the new generation have protection from UV rays, so sunglasses are completely unnecessary. It is a myth. Sunglasses are needed, since the lens protects only the cornea and the inner parts of the eye from sunlight. The rest of the eye and eyelids remain open, so they need to be protected with glasses.
One hundred points ahead
It does not matter, your vision is poor or good - you still need to protect your eyes from the sun. The main thing is to choose the right sunglasses. There are several selection criteria.
By the degree of UV protection
Evidence of sufficient protection of glasses from ultraviolet can be the inscription "UV 400", which indicates that they protect the eyes from radiation of a wavelength less than 400 nm (this is the light of the ultraviolet spectrum 290-380 nm). Quartz lenses (ordinary glass) completely block the penetration of UV rays, glasses with such glasses can be trusted. These lenses have another plus: they do not scratch very much. But their main drawback is high fragility. At present, lenses made of polymeric materials are becoming increasingly popular. When choosing these glasses, pay close attention to the transmittance of ultraviolet.
By the degree of their darkness
There are 5 gradations of shading of eyeglass lenses (80-100% of light is passed - transparent lenses, 43-80%, 18-43%, 8-18% and 3-8% - very dark lenses pass). The choice of transparent or, conversely, sunglasses depends on where the person is going to use them. For example, to travel in the mountains it makes sense to buy very dark glasses. If you are going to rest in low light, then more light. For most people, glasses with a light transmittance of 18-43% are suitable. - These are universal sunglasses, on the labels of which the General purpose is written. It should be remembered that the mirror surface of the lens reduces the transmission of light.
According to the shape of the frame
An important aspect in choosing glasses is their shape. This is not just a matter of image. Frames of anatomical shape allow more reliable protection against ultraviolet, including indirect light scattered around the eyes and conjunctiva skin. But still the choice of the form of glasses is determined by their main purpose. For the city and business style, for example, "aviators", for a country walk or playing on the beach, are suitable sports anatomical. When choosing glasses, the setting is important, its landing on the bridge of the nose, the length and shape of the temples. Unsuccessful setting can cause headaches.
By the color of lenses
The choice of color glasses largely depends on the image component. However, first of all, it is necessary to pay attention to how the light filters will change the visual perception. The least distortion of perception is caused by gray, green and brown lenses. Green color calms. Moreover, earlier glasses with such glasses were used for the treatment of glaucoma. Brown lenses, perhaps, are the most optimal and universal of the whole spectrum: they cut off a significant proportion of the rather harmful blue light and contribute to the increase in the contrast sensitivity of the eyes. Blue and blue lenses should not be used in bright natural light. The fact is that blue light contributes to the formation of toxic peroxides in the retina and lens, which trigger a chain of biochemical reactions leading to blindness after a few years, and in addition increase visual distortion. It is better to wear such glasses in the dim daylight. Pink and orange glasses lead to distortion of perception, can cause irritation, nervousness. "No wonder they say:" see the world in pink. This metaphor has a deep psychophysiological meaning. A special place in this line is occupied by glasses-chameleons. This is one of the best types for both outdoor wear and indoor use. As a rule, chameleons are made of quartz glass with the addition of special photochromes, which darken in bright light. Such glasses themselves are able to adjust the level of light that gets into your eye. This is the best choice for people with poor eyesight.
What if…
When wearing glasses with low-quality lenses that miss the ultraviolet, a person deceives his eye and brain, "telling" him that the pupil needs to expand, as twilight sets in, and the entire ultraviolet flux enters the retina. The consequences of this light injury appear, as a rule, several years later: cataracts and macular degeneration develop, which leads to a partial loss of the ability to read: a dark-gray spot appears before the eye.
By quality
Unfortunately, in our time labels can not always be trusted on labels indicating optical characteristics of glasses. It is advisable to purchase glasses in serious medical salons of optics: they will not risk their reputation and therefore there is a relative guarantee of reliability. When buying glasses, ask the seller for a product certificate. If in doubt, check the optical properties of the glasses, their permeability for ultraviolet on a computer lens - such a device is equipped with any modern salon of optics. Of course, when choosing it is necessary to pay attention to the price.