What Are Reading Glasses?

Reading glasses is a kind of optical products, is a convex lens, its role is to help presbyopia patients see objects clearly. The use of target reading glasses plays an indispensable role in improving people's quality of life.

Basic Classification of Reading Glasses

There are three kinds of foldable reading glasses on the market, which are single light reading glasses, double light reading glasses and progressive multifocal reading glasses. Single light reading glasses can only be used to see near objects, when looking at a distance, you need to take off the glasses. The upper half of the lens can be used to see the far objects, and the lower half can be used to see the near objects. However, this kind of round reading glasses is not beautiful. Progressive multi focus reading glasses can meet the needs of looking at objects at different distances, and the appearance is beautiful. It is the most widely used adjustable reading glasses.

Basic Standards of Reading Glasses

It is very important for people who need to wear clear reading glasses to choose and buy them correctly. In line with the principle of wearing comfort to choose computer reading glasses, absolutely can not only consider the price. Because everyone's presbyopia degree is not the same, the presbyopia degree of two eyes may be different, and some people have presbyopia, myopia, astigmatism and other visual problems at the same time. If you wear inappropriate progressive reading glasses for a long time, not only can not solve the problem, but also cause eye swelling, headache and other problems. Therefore, only after going to the regular hospital for optometry, can we find the funky reading glasses suitable for ourselves. Only the stylish reading glasses suitable for one's eyesight can ensure the health of eyes.

Lenses must be relatively wide. Because presbyopia patients when looking at things, the position of the pupil will change, so the lenses should be wide enough. The height of the lens should be greater than 30mm. The lens with the height less than 25mm is generally portable and can only be used temporarily.

How to Choose The Lens of Reading Glasses

Generally speaking, lenses can be divided into two categories, namely glass lenses and optical resin lenses. Glass lens can be divided into optical glass lens and high refractive index lens with high hardness and good wear resistance. In general, its quality and parameters will not change with time, but the impact resistance of this kind of lens is poor.

Generally, resin lens is much lighter than glass lens, and its impact resistance is better than glass, but its surface hardness is lower and it is easy to be scratched. As the resin lens is soft, do not let the lens directly contact with hard objects. When scrubbing the resin lens, it is better to clean the lens with water first, and then use a special cloth or high-quality cotton paper to dry the water drops on the lens. In addition, it is best not to use resin lenses in bad environment, so as to avoid stains sticking to the lenses.