Summer how to choose sunglasses?

Sunglasses so hot in summer, ultraviolet so rampant, how can go out for a pair of dark glasses? But now the sunglasses so many styles, colors so rich, want to choose a pair of good sunglasses really isn't so easy. Below small make up teach you a few selected sunglasses, hope to be of help. Face shape: square face the crowd because of face is obvious, therefore should not be wearing sunglasses frames is too large; Round-faced people good on horizontal oval frame sunglasses, too big picture frame will make face become larger; Oval faces of people may be arbitrary and are suitable for any type of sunglasses. The total is follow the principle of complementary sunglasses and face. Sunglasses factory YC9705 general sunglasses C7 / dazzle colour purple 2, material: white picture frame material for plate and metal, if citizens are allergic constitution, should try to choose plate frames. Lens material is resin and glass more, compared the two, resin, soft hardness need more care, glass hardness is a little hard than resin. Color: dark glasses lens as the gray, tan, green wait for color, can better protect the eyesight, avoid to choose red, yellow and light blue, these three kinds of color can't very well against ultraviolet. Ms sunglasses factory YC9702 sunglasses C3 black/lens dazzle colour blue four, crowd: children under the age of three because of eyeball developing, sensitivity to light is high, can automatically adjust to reduce the light entering the eye, so don't advocate to wear sunglasses, If the elderly poor eyesight, you can wear light color dark glasses to protect his vision; Myopia patients can wear sunglasses clamping piece, can reduce the discomfort of the eye. Five, skin color, color of skin white people had better not to wear light color frame glasses, can let a pale, and dark skin, as far as possible choose bright color of the frame to brighten the face integral color of skin. Also choose sunglasses, must choose normal professional shop or online store to buy, only regular sunglasses will to special UV lens processing, general sunglasses UV index for 400, '3 without' sunglasses are mostly jerry can not meet the requirements, easy to damage the eyes, eye diseases such as keratitis, cataracts and retinal damage, and eye diseases such as retinal damage is irreparable. Due to the inferior sunglasses related optical parameters can not meet the requirements, long wear also can cause eye fatigue, cause the symptom such as dizziness, headache.
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