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Look from the two key indexes sunglasses is qualified or not

by:Eugenia     2020-07-30
Blocking the harmful light, Bright light) And the strength of the traffic light signal resolution is a test for a qualified sunglasses two key indicators. Then this what enlightenment for us to choose and buy sunglasses? Ray-ban RB3025 - J - M 146/32 men sunglasses white/grey sunglasses when the choose and buy, the first thing to check the quality of the lens. Pay attention to the lens surface lubrication, do you have any grinding crack, bubble, the lenses flat, look from the horizontal lens should have no warping. Sunglasses can be get 45 centimeters from the eye, through the glasses investigation around the vertical and horizontal line, for example, frame window or door frame, etc. , then glasses from top to bottom and move around. Ray-ban sunglasses RB4175 men 877 / Z2 / not gold powder swing or linear distortion condition is found, that the lens distortion, unfavorable procurement. Rugged or signs, bubble lens, can cause dizziness discomfort after wearing, unfavorable also choose and buy. Individual glasses when jerry made very thin lens for processing, will be after high temperature deformation degree, also can cause dizziness. Second, should pay attention to the colour of the lens. To make his eyes from the infrared, ultraviolet radiation, the colour of glasses should have the depth of the meet. Generally is better to dark gray, brown and black, blue and purple is the worst, because the two lenses will be through more ultraviolet light. Yellow, orange and light red as far as possible need not. Ray ban RB2132 - F men sunglasses 622/17 black/dazzle colour blue piece of children under the age of 10 try not to wear sunglasses sunglasses only appropriate in the sun, it's cloudy and it is not necessary to wear indoors. Remind all the parents for their children should be paid attention to while selecting sunglasses: children under the age of 10 vision also in development, so parents try to avoid for its matching sunglasses, especially orange and light red lens not only radiation protection ability is poor and maybe in the eyes of the children.
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