How to identify the quality of sunglasses?
Look at the appearance of the glasses first
1. Electroplating, baking varnish coating, plate surface polishing and other surface colors are uniform, without obvious blemishes, spots and scratches.
2. The printing, laser and engraving strokes of lenses and temples are clear and smooth, easy to identify, and not easy to fall off.
3. The lens color is correct, there is no chromatic aberration scratches and bubbles, the color of the progressive lens is excessively natural, and the color of the left and right lens is symmetrical.
4. The feet with the glasses in hand are facing the fluorescent lamp, so that the reflective strip of the mirror moves smoothly, and the shadow of the fluorescent lamp will not appear wavy or twisted, indicating that the lens is not stressed.
Look at the packaging and origin instructions
Good glasses have a complete package, tag or manual. The tag, product code and manual have product descriptions, industry quality standards and detailed dealer or manufacturer contact details.
Good glasses have clear and true vision, comfortable to wear, and no pressure on the bridge of the nose, temples, ears, etc. Fine workmanship, smooth and delicate touch, smooth and natural lines.