Zhilie summer sun, ultraviolet everywhere, choose a suitable for your sunglasses have become very important! We want to buy cheap oakley sunglasses, first make sure your purchase is intended to shade or to match clothing, decorative role? In addition to shade outside, whether there is anti-ultraviolet function requirements? The safety performance of the lens there any special requirements? Only clear these aims, combined with style and worn on my face the practical effect, to buy a suitable sunglasses. I recommend based on their preferences and choose sunglasses for different purposes, in the purchase note the following:

1 Note that the identity of the UV feature

    A sunglasses line with our current standards, does not necessarily impact other or with additional UV protection properties. Only when the product performance cheap oakleys on an explicit only when assessment of these indicators.

    UV light is between 200nm ~ 380nm wavelength in the sun's rays, including three types: UVA band of 315nm ~ 380nm, UVB band of 280nm ~ 315nm, UVC band of 200nm ~ 280nm. The sun's rays reach the Earth's surface (290nm ~ 2000nm) in about 13% of ultraviolet rays, UVA accounts for which 97%, UVB accounts for 3%, UVC close to 0. UV damage to the human eye is mainly determined by the wavelength of UV radiation time and radiation intensity of the human eye's own fake oakley sunglasses defense mechanism and the strength of the cornea, the lens is the most common eye tissues from UV damage, actinic keratitis and corneal endothelial damage , with the most sunlight-related cataract is the eye disease. In order to protect the health of the eye, you can choose sunglasses with UV capabilities, try to eliminate the following UV 380nm. Purchase should pay special attention to the anti-UV fake oakleys lens features from random statistical point of view, anti-UV glass is difficult to fully meet the requirements.