Uv damage to human body, has the 'cumulative', the longer that is exposed to the sun, ultraviolet rays of the damage.
The United States has a statistical report, a person lifetime by irradiation of ultraviolet ray, eighty percent of whom are exposed in the sun before the age of 18 are cumulative, so avoid the damage of ultraviolet ray, must will start from my childhood.
Sunglasses factory YC9711 men sunglasses C1 black/dazzle colour red parents should teach children the right idea, grew up with the sun glasses of habit, reduce uv damage accumulation of the eyes.
Choose the sun glasses, do not think that the deeper the color of the lens, the stronger the effect of uv radiation.
The darker the contrary, it will make the pupil is larger, were it not for the uv radiation of the lens of safety, eyes of the more exposure to ultraviolet light, the more the damage will be severe.
Ms sunglasses factory YC9707 sunglasses C8 hawksbill/dazzle colour yellow so it's best to confirm the lens can effectively block (more than 99% of ultraviolet ray
Both uva and uvb rays)
, at the same time to both polarization characteristics, so as to eliminate the glare,
Dizzy just to reflect from some angles the eyes of the strong light can make the person can't see things temporarily)
More polarizing Angle of jurisprudence, polarized glasses.
In order to meet the strict requirements of optical, responsible manufacturers tend to invest heavily, personnel and equipment to design and manufacture it.
Ray-ban sunglasses RB3449 men 004/55 silver/lens dazzle colour blue sunglasses on the market the quality difference is very big, the price also have difference, this is why!
To avoid ultraviolet ray of eye damage, of course, is to minimize exposure to strong sunlight, especially between 10 am to 2 PM, this time the sun was shining on the surface of the earth, the highest uv intensity.
Especially those through the cement, sand, snow or the surface reflection of ultraviolet ray, belongs to the most powerful, cause eyes hurt, but it is the most easy to ignore.
In these places, therefore, for a long time, remember to wear appropriate polarizing sunglasses related: polarizer polarizer sunglasses