With the advent of the summer season, when solar activity reaches the maximum return of heat and light energy, ophthalmologists often have to remind their patients that they can not only protect their eyes from light, but also maintain good visibility, which can be adjusted in the usual way - using diopter.
Unprotected from direct sunlight with a high activity of light energy, the eyes are exposed to almost the same light burns as the skin. Sunglasses, significantly weakening the luminous flux, protect the optic nerve, mucous membrane and blood vessels, which are almost defenseless in bright sunlight. People who had visual acuity faced a choice: to protect and protect their eyes or endanger them and use ordinary glasses with diopters.
Diopters for sun protection
Thanks to the latest technical capabilities, the problem of combining ordinary sunglasses with the ability to correct vision was completely solved. In almost every clinic or health center where optics are commercially available, diopter sunglasses can be purchased. They will protect against destructive sunlight, while visual acuity will remain at the proper level. It is best to purchase such a product at specialized points of sale. Buying on the market does not guarantee the quality of the goods, and this is dangerous for the health of the eyes.
For diopter sunglasses, prices may vary. It all depends on the quality of the product, the manufacturer (known or unknown brand) and other features. The cost of the most budget models averages from 600 to 1500 rubles. But before you purchase a product, you must first pass a survey with a specialist.
The benefits of diopter optics
As time has shown, many patients using sunglasses with diopters are very pleased with the purchase. The ability to clearly see objects and at the same time fully protect your eyes from direct sunlight solves the problem of good rest and work in open spaces. Manufacturers were able to diversify the products in this category, and today there are the following options for sunglasses with vision adjustment:
- Diopter sunglasses for drivers.
- Models for swimming.
- Models for sports.
- Glasses for children.
- Sunglasses with diopters for relaxation and work.
It is very important that some of the models not only fulfill their immediate protective function, but at the same time maintain the necessary visual acuity.
Features of choice
Diagnosis in special institutions will help determine the choice of the desired model. It should be remembered that sunglasses with diopters may differ in some functional features. For example, chameleon glasses with brighter lighting change the color of the glasses, densifying the tint, thereby automatically adjusting the level of protection for the eyeball. In poor lighting conditions, the optics become transparent again, thereby allowing an increase in the flow of light to the iris of the eye, which prevents overstrain of the optic nerve.
The most basic criterion for the diagnosis of vision is the determination of visual acuity. Based on the results, the necessary optics are selected. What is very important: the vision of the left and right eyes can have different indicators, in this case lenses with the necessary diopters should be ordered individually.
Optics to consider
In any case, before buying diopter sunglasses, you should definitely pay attention to the following points:
- The manufacturer. The more famous the manufacturer, the higher the quality of the lenses and frames.
- It is imperative to try on and test the proposed model.
- Anti-reflective coating on the lenses, which is the main protection against the invasion of ultraviolet rays on the retina, is a prerequisite for such models.
A poor coating layer or the absence of it as such, a blurry fuzzy picture with a loss of color shades indicates a low quality product.
Glass or plastic
The fact that plastic lenses have long competed in quality with glass is well known. The undoubted advantage of transparent plastic is the ability to withstand mechanical shocks during operation - they are difficult to break. But there are also disadvantages that the manufacturer of this particular type of optics does not advertise.
- During operation, the plastic is covered with small cracks, scratches.
- Over time, the surface of the material is deformed and becomes cloudy.
- Despite the relative cheapness, plastic is short-lived for high-quality operation.
On sale there is also a good quality optics made of plastic, which does not deteriorate for a long time and does not distort images, but, as a rule, these products are made only by a well-known manufacturer and cost a lot of money.
Glass lenses are an order of magnitude higher than plastic models. Well-focused glass transfers the image to the retina 1: 1, this is the main superiority of the material.
The disadvantages of glass lenses include only two points:
- Damage caused by mechanical shock.
- A high percentage of fogging after a sharp change of medium from cold to warm.
Ophthalmologists, advising their patients, give preference to glass lenses, as they are of better quality.
Frames
When choosing frames, many primarily pay attention to design and style. In addition, when choosing a frame, you need to carefully examine the material from which it is made. The frame should not rub and pressure, cause irritation of skin areas where there is constant contact. Models with rubberized arches and silicone partitions comfortably and firmly sit on the bridge of the nose, without causing irritation and damage to the skin.
Men's Diopter Sunglasses
According to the design of frames, optics is divided into three types. Therefore, one of the most popular topics from manufacturers is men's sunglasses with diopters, which are a loyal assistant not only in everyday life, but also at work. A number of men's professions involve working outdoors under the sun, including builders, road handlers, drivers, farmers, and others. Many of them have vision problems, so their eyes need special protection. Thanks to the latest technology, it has become possible to use sun-protection for eyeglasses with diopters when driving cars, while relaxing and when playing sports.
When spraying lenses, different levels of tinting are used, with different densities and the ability to pass sunlight onto the retina. There are 4 levels of coverage:
- "0" - 20% level of protection against exposure to sunlight. Scope - office rooms and places with little or intermittent exposure to sunlight.
- "1" and "2" - the best option for use in everyday life. Eye protection from exposure to sunlight from 20 to 80%.
- “3” - not less than 90% of eye protection from sunlight. The best option for relaxing on the beach.
- "4" - the strongest level of protection, used by professional climbers and travelers in countries with high solar activity.
Photochromic elements that are used to coat lenses are one of the latest discoveries in the scientific world that has solved the problem of protecting the eyes from bright light and sunlight with additional vision correction and bringing it back to normal for people suffering from visual impairment.