For most of people, they choose to wear a pair of eye glasses for two or three years or even longer. They think that it is all right for them to wear a pair of glasses as long as they want. However, it is totally wrong. If you wear your eye glasses for more than two years, they are not longer a tool for you to rectify your strength; on the contrary, they may be the main reason for the decrease of your strength.
According to some research, over 29.2% of people will change their glasses for every three years or even longer. And 36.4% of people will only change their glasses when their eye glasses are broken. If you belong to one of the above groups, it is understandable that your strength is getting worse and worse.
Frequently, it is easy for you to attribute your bad sight to your poor glasses by thinking that your glasses are not good enough to rectify your strength. Obviously, that is not the truth. The truth is that you do not change your glasses for too long time. Glasses also have their service life. After a certain period, you need to change for another pair. Take the apple as an example, if you buy an apple, it is impossible for you to keep that apple for a month or even longer. If you keep it for too long time, you will find that it begins to rot. So do your glasses, every day you have to wear glasses, so it is impossible for you to keep them for long.
Sometimes, your glasses may get hurt because of your carelessness. In addition, some of you do not care much about how to take good care of eye glasses, especially the lenses. In your mind, you believe that it is significant to buy a pair of nice prescription eye glasses, but you do not maintain your eye glasses well. As a result, there are lots of nicks and cracks on your lenses. You may not think those nicks and cracks are big deals. However, the so-called not only the life-span of your glasses will shorten because of them, but also the light transmittance of your eye glasses may reduce. Therefore, your strength is easy to become worse when your eyes get tired.
In order to have good strength, in addition to wear exact optometry and excellent glasses, you also need to take superior into consideration. Once there is any nick and crack, it can affect the function of optics rectification. It matters a lot for you to take good care of your eyes. No matter there is nick or not, it is better for you to change a pair of new eye glasses every year.
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