Many people think that ray ban RB2140 sunglasses can always wear, only the frame is broken, or the lens spent, the degree up to have to change the glasses, in fact, this idea is wrong! Glasses also have life, and quickly take advantage of the spring for the new mirror it!
How long is the life of the cheap ray ban RB2140 sunglasses? We should be from time to time on the optometry, and then decided according to the results of optometry should not be glasses; when wearing glasses is still blurred vision, it should be timely to the hospital for optometry, if the exclusion of eye disease may also Reassemble the ray ban RB2140 sunglasses according to the inspection results. Wearing a pair of glasses for a long time, not proud of the burden on the eyes.
Here Xiaobian also remind you that if your ray ban RB2140 sunglasses sale online are used too long, not only the frame has been a deformation, but also oppression of the bridge of the nose; you use the lens for a long time will be yellow, if not protected There will be a lot of scratches, so that your glasses more clearly, visually appear fuzzy. There is the lens of theray ban RB2140 sunglasses is clear, but a direct impact on the wearer’s glasses comfort.
So how to determine the clarity of the lens? In fact, light transmission for a lens in terms of words, is a very important standard. Generally speaking, the higher the light transmittance, the optical lens reflection and absorption of the smaller, the higher the clarity of the lens.
You can hand the lens, and the distance of about 30 cm or so, and then use the lens to see things through the lens, if the picture is very clear, and no deformation, moving the lens when the screen will not produce a sense of jump, then Said the lens of the light transmission is good, light uniformity is good.
Finally ray ban RB2140 sunglasses to tell you that, whether you are wearing myopia or reading glasses, need to check regularly, there should be timely replacement of discomfort. The person’s vision will increase with age, with the eye changes in the situation, if the glasses “extended service”, will bring a lot of harm, would like to know more information can go to the ultra-ultra-glasses network view details.