As they age, many older people find that their eyesight gradually declines, and it becomes increasingly difficult to work in close proximity, such as reading and writing. At this time, a suitable pair of reading glasses has become their "right-hand man". However, there are many varieties of reading glasses on the market, ranging from a few yuan to several hundred yuan, how to choose?This article will reveal the "knowledge" behind reading glasses for you, so that you can master the skills of buying reading glasses in a relaxed and enjoyable reading.
The basics of glasses
The principle of reading glasses.
Reading glasses are a convex lens that helps older people see objects at close range by changing the angle of refraction of light so that objects at close range are imaged on the retina.
The prescription of reading glasses.
The power of reading glasses indicates the refractive ability of the convex lens, and the higher the power, the stronger the refractive ability. Generally speaking, the presbyopia of the elderly is between 100 and 300 degrees, and the specific degree depends on the individual situation.
How to choose reading glasses
Refraction determines the power.
Before buying reading glasses, you should first do an optometry to determine your presbyopia. Your optometrist will recommend the right reading glasses prescription for you based on your vision condition and needs.
Choose the right lens material.
The lens materials of reading glasses mainly include resin, glass, etc. Plastic lenses are lightweight, unbreakable, and suitable for everyday wear;Glass lenses have high clarity and good abrasion resistance, but they are heavier. You can choose the right lens material according to your individual needs and preferences.
Consider lens function.
In addition to the basic magnification function, reading glasses now also have functions such as light filtering and UV protection. If you regularly use reading glasses outdoors, you can choose lenses with UV protection to protect your eyes from UV rays.
Pick the right frame.
The frames of reading glasses are available in a variety of materials and styles, such as metal, plastic, rimless, etc. When choosing, you can consider factors such as comfort, durability, and personal style. Also, make sure that the frame is the right size to allow for a good field of view without putting pressure on the bridge of the nose and ears.
Pay attention to brand and quality.
When buying reading glasses, it is advisable to choose products from well-known brands and guaranteed quality. Although ** may be slightly higher, the quality and after-sales service are more guaranteed, so that you can buy with confidence and use comfortably.
With the development of science and technology, intelligent reading glasses have gradually entered people's lives. These reading glasses not only have basic magnification functions, but can also be connected with smart devices such as mobile phones to achieve voice control, photo taking and other functions. For the elderly who pursue fashion and technology, intelligent reading glasses are undoubtedly a good choice. Reading glasses