Many myopic people like to swim, but it is obviously unrealistic to travel wearing glasses, do not wear it, but also in the water “be thrown off balance,” some people just wear contact lenses to go swimming. For these people, can choose one with a degree of goggles, because the contact lenses once the water off, no doubt needle in a haystack, but also prone to eye disease.
Many people think that goggles can be bought in the street a few random ten, light standards, does not matter. But experts said the quality supervision, because water and air on the refractive index of the light is different, so a good lens should be consistent with optical and medical standards, the same degree of surface and underwater, as things clear without distortion, to broad view. Also, pay attention to the material washers, as mirrors and washer direct contact with delicate eye skin, stretch also more frequent the site, so material is very important, the present silicone headband, adsorption ability, good elasticity, and on the skin harm, more suitable for allergic people. If the fear of fog, you can buy a belt of high technology “Fog child to eat” technology goggles.
If you have myopia, it is best not to wear contact lenses for swimming, as is more likely to cause eye infections, according to their actual degree less 50-100 degrees to consider buying. If the sale of goggles do not separate different degrees left and right, on to the lower of two degrees as the benchmark. If consumers have astigmatism, astigmatism can be divided by 2, then you can add degrees of myopia.