People often ask in life: Do young people have myopia and old people get presbyopic? Actually, Xiaobian has got different answers to this issue. Today, it is the terminator of the issue. Let everyone thoroughly think about this issue. A thorough understanding!
Ultimate Solution: Will myopia be presbyopic?
Presbyopia, looking like hyperopia, but far from it
Myopia and farsightedness are mostly caused by abnormal anteroposterior eyeballs, and presbyopia is entirely due to diminished refractive power of the lens.
The presbyopic name is presbyopia, which means that the lens grows with age and its elasticity deteriorates. The tension of the ciliary muscle can't relax it; or the ciliary muscle itself ages, and it's not very stressful. Then the lens is over 1000 degrees. The adjustment ability will be lost 50 to 100 degrees every 5 years, resulting in insufficient adjustment ability when looking at the near place, and there will not be enough refractive power. If the object has not yet been imaged, it will reach the retina. It is also necessary to use a convex lens to supplement the refractive power to correct it.
Got nearsighted, old will not be old?
If you have a low degree of myopia when you are young, for example, there is a 50-100 degree myopia, and usually do not wear glasses, then congratulations to you. When your peers began to wear reading glasses, you need to wear reading glasses will be time It is 5 to 10 years behind them. Because the refractive power of myopia of 'reserve' can offset some of the refractive power lost by presbyopia, you may still need to wear reading glasses with your age.
For high myopia, it is necessary to wear early
Because the pathogenesis of myopia and presbyopia does not cancel each other out, so in the presence of presbyopic symptoms, you need to wear a reading glasses age, you still need to wear glasses when looking far away, but the degree of myopia may be reduced.
In other words, after the occurrence of presbyopia in high myopia, due to the narrow range of eye adjustment, it is likely to look far and near is not clear, need two glasses with different degrees of myopia to correct refractive problems, or even a myopia , A pair of reading glasses. Moreover, the degree of myopia seems to be shallow, but the risk of rhinogenic retinal detachment does not decrease.
Pay attention to the prevention of eye rest and advance presbyopia
In order to avoid presbyopia in advance, first of all, to ensure adequate sleep, so that the eyes fully rested. Second, close eyes for about 50 minutes to close the eyes for 10 minutes. You can let the eyes away from the computer screen or books, look into the distance, do 1. Doing eye exercises, activities of the cervical spine, are all good for the relief of visual fatigue.
