The quality of glasses is an important issue in selecting glasses. Then, do you know how to distinguish them? As long as you know something about it, you can not be at a loss iwhile selecting glasses. There are some suggestions for you.
Frames
As for the qualified metal frames, they are quite smooth on the surface without scratching. Both of the circles are in the same size. All the parts are delicately made and fine in the wielding point. The high quality plastic frames should be soft with moderate intensity. What’s more, the frames from qualified manufacturers are equipped with qualification, size and labels. When it comes to the ordinary glass made lenses, they are mostly in green from the side. They are usually with low luminousness and impurity, stripes and bubbles. Besides, they are always not flat.
Lenses
The qualified lenses are in regular shapes rather than spiral or others. The easiest way to test is to put them in front of your eyes, and move them back and forth, up and down. If there is no image distortion, they are in good quality.
With regard to the sunglasses, they should be plain without vertex power. If you wear them with the symptoms like dizziness, sickness or something like that, you may have chosen the lenses with vertex power. When the edges of the lenses are in different thickness, it will cause vision distortion as well.
When you go to purchase glasses, you had better visit the regular stores with production licenses. The invoice, repairing, replacement and returning certificate are necessary to get in order to ensure good follow-up service.
These points are all about the suggestions on distinguishing the quality of glasses. Only we know the ways to select, we can select the actually suitable glasses. We had better get them in professional glasses shops or eye care hospitals with the professional suggestions. A pair of unqualified glasses will lead to the heavy vision burden on wearers. The wearers may easily suffer from eye fatigue and worsening vision condition. Certainly, selecting glasses doesn’t mean the more expensive, the better. The suitable and qualified are the best choices.