As we are talking about tanning goggles it is possible to allocate two types: tanning goggles and tanning goggles with optical lenses for correction of these or those sight infringements.
Let's address first tanning goggles. In spite of the fact that these glasses have been intended for protection of eyes from excessive quantity of light, some people wear them in the way they wear their watch or tie. This category of people can be seen in tanning goggles practically at any time. They do not worry, whether the dazzling sun or already twilight shines conceal an outline of objects. Wherever they are - whether on a beach, whether at a store - we see everywhere spots of their dark glasses instead of their eyes.
Meanwhile, means of eyes protection from surplus of light have been stipulated by the nature. A safety role has been called to play here by eyelids, which can protect, and the pupil, which size can decrease, adjusting thus quantity of light that acting in an eye. Only at very bright illumination, for example, at electric welding, on a beach, in desert or snow-covered space where the beams of the sun reflected from a surface multiply light force falling in eyes, there is a need for tanning goggles. Such need can arise at drivers in a long trip on a motorway in solar weather when the sight all time chained to road. Reflection of light from road in such cases is not so pleasant for un adapted eyes.
Constant wearing of tanning goggles leads to occurrence of a photophobia, when even that quantity of light which easy maintains a normal eye, leads to pains in eyes which do not wear their habitual dark glasses. Besides wearing glasses with the glasses painted in various colors quite often causes to aftereffect, shown in infringement for long enough time of correcting the color perception of the world.
- Do not wear dark glasses without reason;
- If you should wear tanning goggles, be able to choose them correctly (choose types of tanning goggles). It is desirable to select (for the reason specified above) glasses of black (grey) color and to avoid glasses with the painted glasses in any other color. Glasses should detain not less than 70 % of falling light. At forty percentage delay of light, for example, glasses are already practically useless. C.L.Tomson advises also to do following checking of tanning goggles. It is necessary, having put them off for the extended hand length to look through them at any removed object. Object should not look increased or reduced. Besides at movement of glasses it should not be observed any "ripples" or distortions of the view;
- Get your eyes accustomed to bright light. This is accomplished through exercises in solarization.
There are groups of risk and a situation when the sunlight can be especially dangerous to eyes. Children, old men and people with diseases of a retina are most vulnerable to harmful sunlight influence. The most dangerous light conditions are superfluous solar radiation with the raised maintenance of ultra-violet and dark blue beams: high mountains, trans-polar, the southern seas and deserts. Therefore, urgent advice to inhabitants of an average strip and more northern latitudes, aspiring to have a rest in the south - keep the sight for the future - protect the eyes by qualitative tanning goggles. Besides in the south the solar radiation is higher, in addition more short-wave part of a spectrum is reflected from water, creating very severe constraints of work for eyes.
There is a lot information about tanning goggles, but you should use them correctly.