What is the difference between asymptotic glasses and regular glasses?
In modern society, with the development of science and technology and the change of people's lifestyle, glasses have become an indispensable object in the daily life of many people. There are many types of glasses, among which asymptotic glasses and regular glasses are two common types. Although their basic function is to help people improve their vision, they have significant differences in terms of design, effectiveness and who they are suitable for.
First, the design principle.
Regular glasses, also known as single-vision glasses, have lenses that have only one optical focal point and are suitable for single vision problems such as nearsightedness, farsightedness, or astigmatism. Its design is simple and straightforward, changing the refractive path of light by adjusting the curvature or thickness of the lens, so that distant objects or near objects can be clearly imaged on the retina.
Asymptotic glasses are a type of multifocal glasses, also known as progressive lenses. It has a more complex design, with different optical focal points in different areas of the lens, which can meet the needs of far, medium and near vision at the same time. The upper area of the asymptotic glasses is used to see far, the lower area is used to see near, and the middle is a transition area for looking at objects at medium distances.
Second, the use of the effect.
The use effect of ordinary glasses is relatively simple, and it mainly solves the problem of single vision. For people with nearsightedness, regular glasses can help them see distant objects clearly; For farsighted people, it allows them to see near objects clearly. However, when ordinary glasses switch between looking far and near, they need to take off or change their glasses frequently, which is not very convenient.
Asymptotic glasses can adjust multiple focal lengths on a pair of glasses, so that users do not need to change glasses frequently when looking at objects at different distances. This design is not only convenient for the user, but also reduces the discomfort caused by frequent changes to glasses. However, asymptotic glasses have a longer adaptation period, and it may take some time to get used to changes in focal length in different areas when first used.
3. Applicable population.
Ordinary glasses are suitable for most people who need to correct their vision, whether they are students, office workers or the elderly, as long as they have vision problems, they can choose ordinary glasses that are suitable for them.
Asymptotic glasses are more suitable for those who need to see both far and near, especially those over the age of 40. As we age, the body's ability to adjust to the eyes gradually declines, and presbyopia appears, at which time asymptotic glasses can play their unique advantages to help such people maintain clear vision at different distances.
Fourth, summary. Although asymptotic glasses and ordinary glasses are glasses, there are significant differences in terms of design principles, use effects and applicable people. Ordinary glasses are simple and straightforward, suitable for a single vision problem; Asymptotic glasses, on the other hand, are more complex and are suitable for people who need to see both far and near at the same time. When choosing glasses, you should make the right choice based on your actual needs and eye condition. At the same time, no matter what kind of glasses you choose, you should go to a professional institution regularly for check-ups and glasses to ensure the health of your vision and the maximum correction effect. Quality Author Certification Recruitment