Myopia and hyperopia, the selection of sunglasses
Most are plain glass lens sunglasses, so the eye myopia or hyperopia of the people, like matching a pair of sunglasses on the right is not so simple. Then, eyes myopia or hyperopia of the owner of a matching sunglasses do?
Use sunglasses clip or set of mirrors
This is a rather simple traditional method is to clamp or magnet sunglasses by adsorption methods, in the original frame plus a pair of plain glass spectacles sunglasses outside. The advantage is simple, convenient, cheap, handling and ease of use. Drawback is the additional lens options for style, color less, poor aesthetics, is not strong, easy to fall off. The main drawback is that there is an increase in the weight glasses can be oppressive nose and cheek, making it easy sunglasses syndrome. Performance for the eyes or the skin between both sides of the cheek numbness, perception of symptoms such as slow breathing when the nose does not feel like suffering from a cold, and some will even small insects crawling in the face, eye soreness, etc. .
A pair of sunglasses with a degree
Now, some brands of sunglasses will be with myopia or hyperopia, matching sunglasses to the outside of this time can be replaced. The advantage is a Sunscreen and sunglasses have myopia or hyperopia correction function, more natural. Drawback is generally required to go out with two pairs of glasses, change back and forth, too much trouble.
Contact lenses + sunglasses
For people who normally wear contact lenses, contact lenses first, then choose your favorite plain glass sunglasses, is also a good choice. This has the advantage of free choice of high, full and most people buy sunglasses no different. Shortcomings need to pay attention to contact lens cleaning and maintenance, suffers from eye diseases such as keratitis, trachoma and can not wear contact lenses is not suitable for selection this method.
By color glasses
This color changing glasses will change color with the intensity of light, shade, light and strong local lenses become darker in color, low light lens colors are shallow places. Advantage is solved with myopia or hyperopia is not suitable for indoor wear sunglasses shortcomings, both inside and outside a pair of glasses can be very convenient. Drawback is that the more expensive lenses, but choice is relatively small.
Need to remind everyone that UV is the primary function of sunglasses, sunglasses regular factory production over the lens or the package has "100% UV protection", "UV400", "UV" and logo. If wearing sunglasses can block UV rays of the poor quality, will dilated pupils, into the ultraviolet eyes than not wearing sunglasses Shihai much easier to cause eye damage. Regular optical shops generally have ability to detect UV sunglasses instruments can detect your choice is correct. The street of small own it, hawkers glasses often do not meet quality standards, best not to buy.
Armed Police General Hospital Associate Professor Hai Tao