Why do my eyes hurt after wearing my new glasses for a while? I never thought of this reason

Regarding glasses, I often see people encountering this kind of situation online:

After I gave the child new glasses, he could indeed see the blackboard more clearly, but he started to complain of eye pain after doing his homework for less than half an hour. However, he no longer felt uncomfortable after taking off his glasses, so he began to resist wearing glasses.

She thought it was a problem with the glasses, but the glasses store repeatedly tested the glasses and said the glasses were correct, so she let her child go home to adjust. Finally, she took her child to a professional optometry center for a checkup, only to find out that it was not the glasses that were inaccurate, but a problem with the "eye coordination".

So, why is it not enough to just have the right prescription? What is the difference between optometry and optometry, and how should we choose? Let’s talk about it today.

Copyright image, no permission to reprint

Optometry and optometry:

One to select the lens, one to adjust the camera

Optometry mainly measures the refractive state of the eye (myopia/hyperopia/astigmatism, etc.) and determines the degree of correction through subjective and objective methods (retinoscope, computer ophthalmometer, comprehensive ophthalmometer, insert, etc.). However, it can only answer whether the eye chart can be seen clearly, or appropriately add or subtract degrees according to the comfort feedback of the wearer, but it cannot explain the deeper problems of wearing glasses and eye discomfort.

Optometry is centered on visual health. In addition to refractive examination and correction (optometer), it also includes visual function examination (binocular coordination, eye movement, accommodation function and stereoscopic vision, etc.), eye optical biological parameter measurement, etc. The goal is to optimize the comfortable eye experience and prevent and manage visual health problems on the basis of ensuring clear vision.

In layman's terms, optometry solves the problem of "seeing clearly" while optometry solves the problem of "seeing comfortably". Optometry includes optometry and the content involved in optometry is more extensive, so optometry examination is more complicated, time-consuming and expensive than optometry.

Four real cases

1

What happened to Xiao Ming’s eyes?

After Xiao Ming got glasses, his corrected vision was 1.0. He could see the blackboard clearly, but he felt uncomfortable after doing homework for a long time. Although there was no problem with the optometry, the optometry examination found that the problem was that Xiao Ming's eyes were not adjusted enough: when looking at close objects, the speed of "zooming" of the eyeballs was slower than that of his peers, and there were problems with the coordination of the eyes, which easily caused discomfort. It was not difficult to solve. In addition to getting glasses, some visual training (such as flipping and convergence training) was added, and the discomfort disappeared after 2 months. In this case, optometry solved the problem of seeing clearly, and optometry examination found and solved the problem of eye discomfort.

2

Help children who are not yet nearsighted to discover and eliminate "time bombs"

A parent took an 8-year-old girl for a checkup. Although the optometry found that the hyperopia reserve decreased, her vision was normal. In order to further confirm, an optometry assessment was done, and it was found that the length of her axial length was close to the upper limit of children of the same age, and there was a high risk of myopia. Therefore, the optometrist suggested that parents implement a myopia intervention plan for their children as soon as possible, establish a refractive development file, and recheck the axial length every 3 months. In this way, problems can be found earlier and faster, avoiding the dilemma of many children who have already myopia of 200 to 300 degrees when they can't see clearly and go for optometry. In this case, the optometry examination further focused on the mechanism of myopia - changes in the axial length, providing more convincing evidence.

Copyright image, no permission to reprint

3

Tennis coach, can see clearly but can't hit

Coach Li has a vision of 1.2 with glasses. It should be no problem for him to see tennis balls clearly, but he recently reported that he could not catch high-speed balls. Later, after an optometric examination, the cause was found. The dynamic visual function assessment showed that Coach Li's eye movement ability was abnormal. Simply put, there was a "frame jam" phenomenon when the eyes tracked the high-speed tennis ball, and the speed of switching between the distance and near of the line of sight decreased. As a result, he could not react to high-speed balls. The optometrist developed special eye movement training for this. After a period of time, Coach Li's motor ability improved and he played more accurately than before. In this case, optometry focuses on static vision, while optometry goes a step further to cover dynamic vision.

4

42-year-old programmer "Laohua"

Mr. Wang found that he had problems with his eyesight and his reading was a little blurry. After checking at the eyewear store near his home, the store suggested that he get reading glasses. Mr. Wang had doubts about this and underwent further optometry examination. It was found that Mr. Wang had a certain degree of hyperopia, which led to "early presbyopia". It turns out that with age, the eye's ability to adjust decreases, which affects close vision. For hyperopic patients, "early presbyopia" will occur. So the optometrist suggested that Mr. Wang undergo three months of visual training or use progressive multifocal lenses. After one month, Mr. Wang felt that the problem had improved. In this case, the optometry examination provided more convincing results for Mr. Wang's difficult problem and gave more solutions.

Copyright image, no permission to reprint

Seeing this, you may think that after talking about optometry being better than optometry for so long, am I advertising optometry? Of course not. This is actually because everyone is already familiar with optometry, but a little unfamiliar with optometry. Here I want to use these cases to tell you that optometry has limitations in some cases, and optometry examinations are required when necessary. Of course, although optometry examinations are more detailed and in-depth, they are not necessarily required in all glasses fitting scenarios. After all, on the one hand, optometry examinations involve more items and more equipment, and the cost is much higher than optometry. In addition, optometry examinations take longer than optometry, and a lot of time needs to be reserved before the examination, which undoubtedly increases the user's investment. So, in what cases is it more recommended to do an optometry examination? In what cases is optometry enough?

Selection Guide: When to have optometry? When to have opticianry?

Without further ado, let me get straight to the point and explain.

Author tabulation

In general, for adults, if the degree is stable, the vision is good, there is no discomfort in the eyes, and the regular reexamination and regular replacement of glasses are performed, there is no need to conduct a comprehensive optometry examination. If you encounter discomfort when wearing glasses, or symptoms of visual fatigue, and decreased ability to see near, consider a visual function examination. For students, it is important to check the eye axis and measure the degree every year. Here, parents are reminded to make good time plans. Don't arrange all the examinations two weeks before the start of school. You can advance or postpone them appropriately. After all, there are many items in optometry examinations and the time is long. Avoid too many people and the examination is not careful enough. It should be noted that optometry examinations have certain requirements for the equipment, professionalism of personnel, and the degree of solution provided by the testing agency, so the choice of the agency is also very important. Finally, to summarize, qualified optometry is the "starting line" for clear vision, and optometry examinations can help us rush to the "finish line" of comfortable eye use. You can refer to the suggestions in this article to choose the appropriate examination method according to your own situation and needs, so that the examination can be more efficient and economical, and the glasses can be more targeted.

References

[1] Yang Zhikuan, ed. Clinical Optometry[M]. Science Press, 2008.

[2] Sun Wenfang, Wang Changsheng, Zhao Ming. The latest research progress on the effect of sports vision training[J]. Journal of Wuhan Institute of Physical Education, 2018, 52(2):7.

[3] Li Lihua, Nan Li, Jiang Yanglin, et al. Effects of symptomatic visual training on binocular vision function parameters[J]. Chinese Journal of Optometry and Visual Science, 2013, 15(3):3.

Planning and production

Author: Jin Xin, Director of the Shouyang Myopia, Strabismus and Amblyopia Prevention and Control Research Institute, Huainan City

Review | Jia Changkai, deputy chief physician of Xiamen Eye Center affiliated to Xiamen University

Planning丨Ding Zong

Editor: Ding Zong

Proofread by Xu Lailinlin