Abstract: when you can see 1.0 with 250 degree and 300 degree glasses, you should choose 250 degree lenses. If you wear 300 degree lenses, it may be “overcorrected”, resulting in the adjustment of ciliary muscles. Even if you use your eyes normally all day, you will feel tired, and even suffer from dizziness, headache, deepening myopia and other symptoms.
No.1: why more than 1.0?
in most people’s minds, 1.5 is normal vision. So why do most people with myopia glasses, can see clearly the e of 1.0 on the visual acuity chart, and the doctor doesn’t continue to point down? According to ophthalmologists, in fact, correcting to 1.0 is a common situation for most people, and usually correcting to 1.0 does not mean that everyone corrects to 1.0. It will change according to everyone’s situation, generally about 1.0-1.2. Myopia glasses only help ametropic people to finally see, but things too far away are not easy to see. This is a very normal thing. There is no need to pursue very clear distance, which will increase the burden of eye adjustment.
No.2: why is it divided into actual degree and lens degree?
some people will find that the degree of glasses is different from their actual degree. Why? Experts explained that there is a principle of “low is not high” when wearing myopia glasses. For example, when you can see 1.0 when wearing 250 degree and 300 degree glasses, you should choose 250 degree lenses. If you wear 300 degree lenses, it may be “overcorrected”, resulting in the adjustment of ciliary muscles. Even if you use your eyes normally all day, you will feel tired, even dizziness and headache, Myopia deepening and other symptoms.
for special patients, especially those whose visual acuity can not reach the normal level after wearing glasses, they need to wear glasses and corresponding treatment according to the doctor’s advice. Of course, in either case, the adjustment of individual eyes should also be considered, and progressive glasses should be fitted according to the situation.
NO.3: why should glasses be replaced regularly?
in adulthood, the completion of eye development and the change of eye habits make the development of myopia less obvious. At this time, many people will feel that the degree is “suitable” for a long time. Unless they want to change a better looking frame, they will not consider changing until the glasses are broken or myopia is significantly deepened, and they can’t see things clearly with the original glasses. Experts remind that 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 glasses mirror, it will obviously affect its optical correction performance. Therefore, regular maintenance is very important to maintain good clarity as far as possible.
if you often use electronic products such as computers, televisions or mobile phones in your work and life, it is recommended to go to the hospital for examination at least once or twice a year. First, you can check whether your eyesight has changed, and then adjust the degree of glasses appropriately; Second, you can check whether the glasses are deformed or scratched. Regular maintenance and timely update can make the glasses always in good working condition.