When swimming must choose a pair of goggles, good result can see underwater, secondly can protect the eyes. Lens to pick high-definition. When buying carefully the GuanChaJing clarity, light transmittance and prevent mist effect.
The short time swimming hemispherical lens face, can inspect sense clear realism over 95%, Long time swimming goggles with plane, prevent to produce myopia, but the mirror easy to cause the waves trace, poor perspective effect.
Many people buy the goggles pay attention to prevent mist sex, actually new goggles fog proof validity mostly for 3 months, three months after daub anti-fog coating need.
Glasses gasket suction wants moderate, not tight, the better. Currently on the market the goggles with rubber, silica gel etc give priority to, among them rubber is the most traditional material, it is hard, aging, cheap price, Silicone products to the skin and harmless, suitable for allergic crowd, anti-aging strong sex.
Inspection waterproof properties, firstly the mirror, put down by the goggles in eyes, and feel the gasket suction, meanwhile gently press lenses will inside lens discharge air, if the suction moderate, explain waterproof no problem.
Of course, waterproof performance will be different because of adding a little different, so when the choose and buy must do it myself. Gasket hardness wants moderate, too hard can cause a bone pain, too soft will lead to high intraocular pressure, will affect the use.
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