Nowadays, more and more people wearing Cheap Ray Bans Wayfarer Sunglasses Outlet Sale glasses, in which the majority of vision correction. Myopia glasses make the vision becomes clear, but should be noted that, if the quality of glasses there is a problem may actually make eyesight getting worse.
Many members of the public should note that glasses had this slogan: "optometry, instant." Glasses enterprises will play a similar slogan to attract customers, but if the one-sided emphasis on fast, is bound to relax the requirements on the quality of glasses.
Some people encountered such a situation: after a new pair of glasses, just to wear when there are more than 500 degrees, but after just six degrees was doubled. Then after wearing new glasses did not feel particularly comfortable, it will feel when you go flat road Dangling may glasses shop owner has said it is a normal phenomenon. After the quality inspection center for testing specialized staff, only to find the lens does not have any quality problems, and part of the problem lies in the glasses.
In general, the location should be in the best view point Cheap Mac Cosmetics Makeup wholesale Outlet glasses in front of the pupil, if the preparation of the glasses between the top point of view and also from the pupil, the preparation of glasses described error occurs, there is an error in the two is the vertical distance between the points of difference between each of glasses.
Consumers often quality problems encountered in the process of glasses there are three: First, the vertex (commonly known as degree) are not allowed, ie, vertex glasses with diopter correction inconsistent with the needs of customers; Second IPD allowed, that level of glasses from the optical center and customer IPD does not match; Third column axial deviation does not meet product standards. These parameters do not match, it will directly affect the effect of vision correction, visual fatigue caused by the user, thereby increasing vision loss.
Quality glasses prepared directly affects our health, in the national standards for the provision of glasses equipped with a number of technical indicators, the most important of five technical indicators are: vertex deviation, the optical center of the horizontal deviation of the optical center of each vertical poor, poor optical center of each level, the column axial deviation. This five technical indicators, vertex deviation detection is equipped with the first part of the processing of Fake Oakleys Frogskins Sunglasses Cheap for Sale glasses, and then four indicators were all carried out after processing is complete before testing.
Therefore, in addition to the quality of the lens glasses equipped with quality also depends largely fixed with the quality control process, of which, in addition to glasses industry itself strengthen self-discipline, but also need to be equipped with the relevant departments to strengthen glasses sampling work to ensure safe and reliable preparation of glasses.
To remind the general public that in mind: First, the former optician best to go to hospital for regular eye examinations, vision loss because some students are not caused by the myopia or myopic astigmatism may be caused by a number of eye diseases, the distinction is still true myopia pseudomyopia. Secondly, the glasses should go to a regular optical shop, should not pursue cheap or easy, to see whether the glasses made of optical products production license, glasses optometry equipment and testing instruments are qualified markers, optometry, production staff are certified posts, glasses or without mark. Meanwhile, the preparation of glasses must optometry, try other procedures, optometry, to obtain prescriptions. Again, pay attention to material selection of glasses. General glasses into resin, glass and crystal, such as several, lenses and frames should have a shelf life. After the purchase of Tiffany and Co Key Necklace Jewelry Outlet glasses, would like to request the preparation of optical processing unit sales orders, invoices, sale commitments credentials, so when problems arise in the future be able to safeguard their legitimate rights and interests. If symptoms persist, you should promptly consult an ophthalmologist or professionals.