Four questions you should pay attention to before choosing sunglasses
Choosing a fashionable and practical pair of sunglasses will not only shield you from the dazzling sun rays when you go out and travel, but also a must-have item for fashionistas to match their outstanding looks. But do you know what issues you should pay attention to before choosing sunglasses?
1 Can everyone wear sunglasses?
The answer is no, because wearing sunglasses in people with certain eye diseases can be counterproductive. For example, people suffering from angle-closure glaucoma will induce glaucoma by wearing sunglasses; color blindness and night blindness wearing sunglasses will significantly reduce visual acuity; children under the age of 6 are in the developmental stage, wearing sunglasses will lead to amblyopia; cataracts and fundus diseases can lead to low vision It is recommended not to wear sunglasses.
In addition, it is not recommended for the elderly to wear sunglasses, which is prone to danger due to dim light. Conversely, some people must wear them: intraocular lenses after cataract surgery, dilated pupils due to certain eye diseases, skiing or alpine adventure sports, and drivers, to reduce UV damage to the eyes, it is best to wear sunglasses.
2 Can myopia and sunglasses have both?
The choice of sunglasses for myopic patients needs to consider the diopter. Low or moderate myopia can wear ordinary, no diopter sunglasses without affecting safety, while high myopia (higher than 600 degrees) patients must wear diopter sunglasses to be safe. .
3 What is the first consideration when choosing sunglasses?
Sunglasses should be selected according to their functions. Sunglasses can be divided into polarized glasses, sunshade glasses and sports glasses according to their functions.
Polarizer: Drivers and fishing enthusiasts recommend choosing a polarizer, which can eliminate glare from all directions and make objects look clearer.
Shading lenses: Shading lenses can selectively filter harmful blue light and ultraviolet rays, while allowing other visible light to pass through the lens as much as possible, suitable for patients with macular degeneration, diabetic eye disease, and excimer surgery.
Sports goggles: The frames of sports goggles are specially made, suitable for skiing and mountaineering.
Before wearing sunglasses, the general population is advised to consult a professional ophthalmologist and choose sunglasses with UV protection labels to avoid unnecessary harm.
4 What color sunglasses are best for you?
Lenses are available in various colors. For eye health, medium-depth gray and brown are the best. Lens color selection should be based on the principle that the color of the surrounding environment is not distorted, the edge of the object is clear, and the signal lights of different colors can be effectively identified.
Gray lenses can evenly absorb any color spectrum, and the scene seen after wearing the glasses will only become darker without obvious chromatic aberration; brown lenses can filter out a large amount of blue light, which can improve visual contrast and clarity. Works well in foggy conditions.
The color of the mirrors worn by the driver should not be too dark, otherwise the visual signal will be delayed from reaching the brain, resulting in a distortion of the sense of speed, which will make the driver make wrong judgments. It is recommended to wear a pair of brown sunglasses.
