It is undeniable that the quality of today's sunglasses is mixed. Many sunglasses not only have problems with the quality of the paint that blocks the light but also the arc design is not scientific. At this time, we need to choose the right sunglasses according to the following criteria.

1. It should be emphasized that although sunglasses with a slightly larger arc are more beautiful and popular, the things you see after wearing them (especially when looking down) will be somewhat deformed, and dizziness and eyes will appear after wearing them for a long time. Painful phenomenon.

If the curvature of the lens is too large (close to a spherical surface) or too small (close to a plane), it will affect the refractive index of the lens to the light, making the objects seen are uneven, and long-term wearing will easily make the eyes feel tired, dry, and damage vision.

2. Generally speaking, the arc between the center and the edge of the cornea is about 10-15 degrees, so the arc of the lens is preferably within this range. First, make sure that the curvature of the lens is normal and then consider whether it is beautiful.

3. If your sunglasses don't have UV protection, they can hurt your eyes. When the eye encounters strong light and ultraviolet rays without obstruction, the light will directly enter the pupil, causing damage to the eye. Sunglasses use different methods (such as polarization, color change, coating, etc.) to block UV rays. Sunglasses are able to block UV rays and strong light because a special coating is added to the lenses. When purchasing, look for signs such as "100% UV protection", "UV400" and "UV protection" on the packaging.

4. When it comes to the color of the lenses, experts from the American Blindness Prevention Union suggest that in general, it is best to choose brown lenses in summer, and the stronger the outdoor sunlight, the more dark sunglasses should be selected.

On the one hand, the lenses of these colors are better at absorbing and filtering strong light and ultraviolet rays; on the other hand, the brown lenses can provide good color perception, and the colors can still be clearly distinguished after wearing them, while the brown lenses can block them. The radiated light from the smooth and bright surface can see the subtle parts of the object clearly in the harsh sunlight. Drivers are better off with brown glasses.

5. Wearing sunglasses for an hour or two when going out can play a protective role, but the time should not be too long. Because the child's visual function is immature, it needs more bright light and clear object stimulation. Wearing it for a long time will affect the normal development of vision. In severe cases, it may lead to amblyopia.

If you want to know more about sunglasses after reading the above, please continue to pay attention to our news.

ZOHO has become one of the best manufacturers of optical frames and sunglasses by virtue of its leading manufacturing technology and thoughtful service attitude. We can provide diversified choices according to the needs of users, and we are always equipped with a professional quality inspection system to fully control the quality of products. The reason why our products sell so high is that we always put the needs of our customers first. If you want to buy our sunglasses, please contact us immediately!