Who is suitable for custom-made progressive lenses Progressive lenses are designed to provide a natural, convenient and

Who is suitable for custom-made progressive lenses Progressive lenses are designed to provide a natural, convenient and comfortable correction method for presbyopia patients. That's why we describe progressive lenses as "zoom lenses", and when you wear them, a pair of glasses is equivalent to paying for more glasses.

(Recommended reading: Fitting progressive lenses for middle-aged and elderly people, you first understand these questions! As you get older, you will find that your eyes are very good and you are not short-sighted, but after the age of 45, you will not be able to see clearly when you look at books and newspapers and look at your mobile phone, or you will feel tired and tired after watching for a while, and you need to wear reading glasses. At the same time, glasses friends who wore myopia glasses before also found that it was no problem to wear glasses to read books and newspapers and read mobile phones, and after the age of 45, they had to take off their glasses to see clearly.

This is because as we age, the ability of the lens to regulate the aging of the muscles of the eye decreases, which is called presbyopia symptoms. After having presbyopia, there is a problem. 1. People who are not myopic need to wear reading glasses when they see close, and they need to take off their reading glasses when they look far away, if they are teachers or some job positions need reading glasses, they need to keep putting them on - taking them off - putting them on again - and taking them off again, it is very inconvenient to often need to carry reading glasses with them, and they need to put a few pairs of reading glasses everywhere in the home office and because they take them off because they are worn off, they are often thrown and put on glasses that are crushed, and it happens from time to time that they can't be found.

2. People with myopia. There are two types of people with myopia, one is within 400 degrees of myopia. This kind of low-to-moderate myopia, when you look close, you can see it by taking off your glasses directly, and you have to keep putting it on, taking off, putting it on again, and taking it off again when you see it far away.

The other is myopia with a degree of more than 500 degrees, or even thousands of degrees, and the glasses must be taken off but after taking them off, you have to rely on the eyes to see clearly, for example, you must put the mobile phone next to the eyes to look at the phone. This is because there is too much difference between the eyes and the emmetropia state after taking off the glasses, and the distance between reading books and newspapers or mobile phones is about 33cm from the eyes, which requires +3.00DS of adjustment power, that is, it is exactly in the orthopedic state when the myopia is reduced and offset by 300 degrees.

This situation will feel more troublesome than the previous two. A progressive multifocal lens, also known as a progressive lens, is designed to have multiple focal points on one lens as the name suggests. If you divide it from the focal point, you can divide the lens into single vision lens, bifocal lens, and multifocal lens. Our most common lenses are monofocal lenses, which have only one luminosity on the lens; Bifocal lenses are bifocal lenses, which were used by many elderly people to solve the problem of seeing far and near at the same time, but due to their own major shortcomings and the popularity of progressive multifocal, bifocal lenses have been basically eliminated; As a milestone in the history of lens development, multifocal lenses will also be the main direction of future research and development and market popularization by scientists.

Nowadays, scientists have made corresponding studies on multifocal lenses according to the eye patterns and physiological characteristics of people of different ages, and finally divided them into three types of lenses: 1. Adolescent myopia control lenses - used to slow down visual fatigue and control the development rate of myopia. 2. Anti-fatigue lenses for adults - used for teachers, doctors, people who use too much computer at close range and in order to reduce visual fatigue at work.

3. Progressive film for middle-aged and elderly people - used for middle-aged and elderly people, a pair of glasses to easily see farsightedness and nearsightedness.