Diopter Sunglasses

Sunglasses are very popular because they protect the eyes from bright sunlight. Diopter glasses, which combine the function of sun protection and eye correction, are also in demand.

The sun affects the eyes in almost the same way as the skin. Only there is one small difference: the vessels of the eyes do not produce melanin, so they are completely defenseless and vulnerable to the rays of the sun.

Their impact can lead to the following consequences:

• Longwave radiation causes macula degeneration and cataracts - these are the main causes of blindness in the elderly.
• Middle-wave radiation provokes a burn of the cornea, resulting in the development of lacrimation, blepharospasm, photophobia.
• Shortwave radiation is responsible for the appearance of retinal neoplasms.

Sunglasses with diopters are required for people with refractive disorders who:

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

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

• A person with refractive disorders clearly sees objects, not squinting and not straining his eyesight.
• The main eye problems are solved - hyperopia and myopia.
• There is the elimination of solar glare that distracts attention and interferes with viewing the surrounding space.
• It can be used for practical purposes under certain conditions: sports, driving a car, etc.

Full eye protection is provided during rest and work in open spaces during strong and prolonged exposure to the sun.

First of all, do not pay attention to the color, shape of the frames and lenses. Should:

• Get the advice of a competent ophthalmologist to pick up glasses that can provide maximum protection from the sun's rays and correct vision correction.
• Make a purchase only in specialized optics stores, where goods from reputable manufacturers are presented.
• Determine the most suitable lens material.
• Check in practice the indicator of the degree of protection from ultraviolet radiation.
• To put on an accessory and examine various objects - there should not be a 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 - the delay of ultraviolet rays. Under dark glasses the pupil usually expands, therefore it becomes most susceptible to adverse effects. UV-380 - screening 95% of ultraviolet radiation. UV-400 - filtering up to 100% hazardous radiation. The mark of this indicator is usually located on the lens or indicated in the certificate.

An important parameter is the level of toning.It shows how much light glasses let in and how much UV rays they hold. There are five degrees:

• "0" - pass from 80 to 100% of the light. The lenses do not have color and are suitable for use in cloudy, cloudy weather.
• "1" - light transmission capacity ranges from 43 to 80%. Wearing glasses is best in weather with variable clouds.
• "2" - the average level of darkness, skipping 18-43% of the light. Suitable for wear under the pale sun.
• "3" - very strong blackout. Only 8 to 18% of the light passes through the lenses. Well protected from bright sunlight, are used on the beaches. The most demanded model among consumers.
• "4" - the maximum level of darkness. Capacity - up to 8% of light. They are worn in open solar spaces.

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

Glass or plastic is used as a material. Glass is durable, durable and wear resistant. Because of its weight, it is not suitable for patients with severe visual impairment - this requires thick lenses that will be very heavy. Damage quickly forms on plastic, therefore, the product should be stored in a case or a special protective coating should be applied.

Framing does not affect the quality of the glasses. But when choosing, it is necessary to take into account stylistic recommendations. Mainly focused on the shape of the face:

• Triangular - massive, large frames with an original upper part fit it.
• Oval - rims of any shape look perfect with it.
• Round - the frame can be in the form of a rectangle or a square with beveled corners.
• Square - it is best to pick an oval rim 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 pads. They simply rise or are completely removed. Attached to conventional corrective lenses with clips. Their movements must be unhindered, light. It is necessary that the main glasses and solar covers on the glasses exactly match in shape and size, fit tightly to each other.

Polarization models eliminate glare, which is delayed in a special protective plate. The benefits of glasses include good UV protection, increased image clarity, lack of tension and eye fatigue. Such options are not cheap.

Glass or plastic is used as a material. Glass is durable, durable and wear resistant. Because of its weight, it is not suitable for patients with severe visual impairment - this requires thick lenses that will be very heavy. Damage quickly forms on plastic, therefore, the product should be stored in a case or a special protective coating should be applied.

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

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

There are various options for points 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 rays well. Must have a rubberized hypoallergenic rim. Before buying a model, it is necessary to measure it so that it does not crawl and cause discomfort.
• Drivers. Glasses should eliminate glare, therefore polarization variants 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 bottom), 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 protected eyes from ultraviolet radiation, dust and wind, which causes tearing. The presence of rubberized arms, a streamlined shape and light weight is necessary - it is best if the material of the product is plastic.

The main thing is that in the chosen model it is very convenient and comfortable to do your favorite things, and also to clearly see the surrounding space due to the dioptric lenses.

To date, optics salons offer a huge range of glasses with lenses of different darkness and in various frames. If there are severe visual impairment or their combination, for example, myopia with astigmatism, then you should order 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 toning corrective lenses. This method is cheaper compared to customized options.

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