Diopter sunglasses

Sunglasses are very popular because they protect your eyes from bright sunlight. Not less in demand are diopter glasses, combining the function of sun protection and vision correction.

The sun affects the eyes in much the same way as the skin. There is only one small difference: the vessels of the eyes do not produce melanin, therefore they are completely defenseless and vulnerable to the rays of the sun.

Their impact can lead to the following consequences:

• Long-wave radiation causes macular degeneration and cataracts - these are the main factors causing blindness in the elderly.
• Medium-wave radiation provokes a burn of the cornea of ​​the eye, resulting in lacrimation, blepharospasm, photophobia.
• Short-wave radiation is the culprit in the appearance of neoplasms of the retina.

Dioptric sunglasses are required for those people with refractive errors who:

• Engaged in active sports without the possibility of using contact lenses.
• Do not want to wear corrective lenses due to allergies and irritation.
• They have high eye sensitivity to the sun; monitor the health of the organs of vision.

Unlike ordinary glasses that perform corrective functions, sun-protection models have advantages:

• A person with refractive impairment clearly sees objects without squinting or straining his eyesight.
• The main eye problems are solved - hyperopia and myopia.
• Sun glare is removed that distracts attention and interferes with viewing the surrounding area.
• It can be used for practical purposes under certain conditions: playing sports, driving a car and more.

Full eye protection is provided when resting and working in open spaces during strong and prolonged exposure to the sun.

The first thing you should not pay attention to the color, shape of the frame and lenses. It follows:

• Get the advice of a competent ophthalmologist to find glasses that can provide maximum protection from sunlight and correct vision.
• Make a purchase only in specialized optics stores, where products from well-known manufacturers are presented.
• Determine the most suitable lens material.
• Check in practice the indicator of the degree of protection against ultraviolet radiation.
• To put on an accessory and examine various objects - there should be no distortion of colors.

When choosing glasses for drivers, the presence of anti-reflective coating is taken into account - it is important when traveling by car. Such coverage is not available in all models. The absence of scuffs and cracks is an important factor.

One of the main functions of glasses is the delay of ultraviolet rays. Under dark glasses, the pupil usually expands, therefore becoming the most susceptible to negative influences. UV-380 - screening of 95% of ultraviolet radiation. UV-400 - filtering up to 100% of hazardous emissions. The mark on this indicator is usually located on the lens or indicated in the certificate.

An important parameter is the level of tinting. It shows how much light the glasses transmit and how much they hold up the ultraviolet rays. There are five degrees:

• "0" - pass from 80 to 100% of the light. The lenses are colorless and suitable for use in cloudy, cloudy weather.
• “1” - light transmission capacity ranges from 43 to 80%. Wearing glasses is best in cloudy weather.
• "2" - the average level of darkness, the passage of 18-43% of the light. Suitable for socks under the dim sun.
• “3” is a very strong blackout. Only 8 to 18% of the light passes through the lenses. They protect well from bright sunlight, are used on the beaches. The most popular model among consumers.
• “4” is the maximum level of darkness. Throughput - up to 8% of the light. They are worn in open sunny spaces.

Lens colors: black, brown, gray, gray-green. It is selected in such a way as to prevent distortion of the natural colors of the surrounding objects.

The material used is glass or plastic. Glass is strong, durable and wear resistant. Because of its weight, it is not suitable for patients with severe visual impairments - this requires thick lenses, which will be very heavy. Damage quickly forms on the plastic, so you should store the product in a case or apply a special protective coating.

Framing in no way affects the quality of the glasses. But when choosing, you need to consider stylistic recommendations. They mainly focus on the shape of the face:

• Triangular - massive, large frames with an original upper part fit it.
• Oval - frames of any shape look perfect with it.
• Round - the frame can be in the form of a rectangle or square with beveled corners.
• Square - it is best to choose an oval frame or glasses that do not have a frame at the bottom.

You should also take into account the color of the eyes, skin and hair, clothing style. Thus, you can purchase a product that performs not only its direct functions, but also gives the image some zest.

The most common models are glasses with tinted overlays. They simply rise or are completely removed.Attached to conventional corrective lenses with clips. Their movements should be unobstructed, light. It is necessary that the main glasses and the solar pads on the glasses exactly match in shape and size, fit snugly together.

Polarization models eliminate glare that lingers in a special protective plate. The advantages of glasses include good protection against UV rays, increased image clarity, lack of tension and eye fatigue. Such options are not cheap.

The material used is glass or plastic. Glass is strong, durable and wear resistant. Because of its weight, it is not suitable for patients with severe visual impairments - this requires thick lenses, which will be very heavy. Damage quickly forms on the plastic, so you should store the product in a case or apply a special protective coating.

Photochromic coating (chameleon glasses) - change the degree of toning depending on the light intensity. In production, a special technology is used, due to which, under the influence of ultraviolet, the lenses darken and brighten when a person is in the room. This is the best solution for people with a fear of light, increased lacrimation.

The lenses in such glasses will have to be changed quite often, because the properties of the photochromic coating are quickly lost. Some models are not obscured in the car - its glass practically does not transmit ultraviolet rays.

There are various options for glasses designed for:

• Children. It is best to start wearing sunglasses with diopters at the age of 3-4 years. It is not recommended to purchase products with green and brown lenses - they transmit UV light well. Mandatory presence of rubberized hypoallergenic frames. Before buying, the model must be measured so that it does not slip and does not cause discomfort.
• Drivers. Glasses should eliminate glare; therefore, polarization options with a high degree of UV protection are most suitable. Thanks to the gradient coating (the upper part of the lenses is darker than the lower one) it is convenient to observe the road and the dashboard. There are male and female models.
• Athletes. It is important that sports options are firmly held on the face, well protect the eyes from ultraviolet radiation, dust and wind, which causes tearing. It is necessary to have rubberized arms, streamlined shape and light weight - it is best if the material of the product is plastic.

The main thing is that in the selected model it would be very convenient and comfortable to do your favorite things, as well as clearly see the surrounding area due to diopter lenses.

To date, optics salons offer a huge assortment of glasses with lenses of various blackout and in all kinds of frames. If there are severe visual impairments or a combination of them, for example, myopia with astigmatism, then it is worth ordering the product individually. It will be more expensive than buying a finished model, but it will be more comfortable for the eyes.

You can use glasses with clips. Most opticians offer the service of tinting corrective lenses. This method is cheaper compared to custom options.

In any case, you need to contact only professional stores to get a high-quality and durable product.