For people with myopia, glasses are nothing new. But do you remember that Doctor E who can see the 1.0 position clearly with glasses stopped? Have you ever wondered whether you should wear myopia glasses when you look close? Why do myopia glasses change regularly? There are many reasons why small mirrors can expand. In fact, many people don't know much little knowledge. Now let the doctor tell you.

Question 1: Why do you have more glasses than 1.0

For most people, 1.5 is normal vision. So, when most people wear myopia glasses, when they can see 1.0 E on the vision chart, why not point down?

According to ophthalmologists, the common condition of most people is to correct to 1.0. In addition, correcting to 1.0 does not mean that everyone is corrected to 1.0. It will change according to everyone's situation, usually around 1.0-1.2. Myopic glasses can only help people with refractive errors to see clearly, but it is normal that things too far away are not easy to see. There is no need to pursue very clear distance too far, which will increase the burden of eye adjustment.

Question 2: Why is it divided into actual degree and glasses degree

Some people will find that the degree of glasses is different from their actual degree. Why? Yue Lijing explained that there is a principle of "low but not high" in matching myopia glasses. For example, if you can see 1.0 with a 250-degree and 300-degree lens, you should select a 250-degree lens.The normal vision of the eye will adjust the focus through the ciliary muscle. When we look at objects in the distance, the ciliary muscles are in a relaxed state; As you approach, the ciliary muscles contract. If you can see clearly with a 250-degree lens, that would be great. Then wearing 300-degree lenses may "overcorrect" and cause the ciliary muscle to be adjusted. Even if you use your eyes normally all day, you will feel tired, and even have symptoms such as dizziness, headache, and deepening myopia.

For special patients, especially those whose vision cannot reach the normal level after wearing glasses, they need to wear glasses and take corresponding treatment according to the doctor's advice. Of course, no matter what the situation, you should also consider the adjustment of your eyes, and you can match progressive glasses according to the situation.

Question 3: Why should glasses be replaced regularly

After adulthood, with the completion of eye development and the change of eye habits, the development of myopia is less obvious. At this time, many people will feel that the degree is "suitable" for a long time, unless they want to change a more beautiful framework; Otherwise, you must wait until your glasses are broken; Or myopia is obviously deepened. You will only consider replacing it if you can't see clearly with the original glasses.

Glasses will be damaged during use. Continued use of inappropriate glasses will have a faster impact on vision. When there are many scratches on the lens surface, it will obviously affect its optical correction performance. Therefore, regular maintenance is very important to maintain better clarity. In addition, the deformation of the lens frame will also cause the deviation of the optical center of the lens, increase the burden of the eye adjustment function, and have a significant impact on vision.

The deformation of the frame is mostly caused by living habits, which usually does not attract people's attention. For example, most people take off their glasses with one hand, which will lead to uneven stress on both sides and deformation of the frame; The rough treatment of glass, such as falling and touching, will lead to deformation.The article comes from the internet. If there is any infringement or violation, please contact us for deletion and correction.Disclaimer: Some resource pictures and text messages of this website come from the network. If your rights and interests are infringed, please notify us in time by email: xsd@66ra.com