Myopia when young, won’t old flowers when old?

Abstract: presbyopia, also known as “visual acuity function decline”, due to the increase of age, the hardening of lens, the weakening of elasticity, the reduction of adjustment ability and the weak contraction ability of ciliary muscle, resulting in the difficulty of close vision after the retina.

most people will get presbyopia when they are old. Some people say “presbyopia is hyperopia”. Therefore, some people say, “when you are young, you will not be presbyopia when you are old”. But is it really the case?

in order to find out the root of the problem, we must first distinguish between presbyopia, hyperopia and myopia.

what is “presbyopia”?

and

presbyopia, also known as “visual acuity function decline”, due to the increase of age, the hardening of lens, the weakening of elasticity, the reduction of adjustment ability, and the weak contraction ability of ciliary muscle, resulting in the difficulty of close vision after the retina. It is more common in people over 40 years old, mainly manifested in blurred close reading, eye fatigue, acid swelling, tears, photophobia, and associated headache.

what is “hyperopia”?

and

hyperopia refers to a refractive state in which the focus falls behind the retina after the parallel light beyond 5 meters is refracted by the eyeball. Hyperopia occurs when the refractive power of the eye is insufficient or the length of its axis is insufficient. Hyperopia patients’ eyeballs are in an over regulated state. They can’t see clearly too far or too close, and the age of onset is not fixed.

what is “myopia”?

myopia is the opposite of hyperopia. It refers to a refractive state in which the focus falls in front of the retina after the parallel light is refracted by the eyeball. It can be divided into true myopia and false myopia. The occurrence of myopia is related to many factors such as heredity, development and environment, but the exact pathogenesis is still under study.

found? Hyperopia is not presbyopia! Then we answer the second question:

“when you are young, you are short-sighted, and when you are old, you won’t grow old”. Is it true?

and

myopia is that people can see objects near clearly and those far away are not clear, while presbyopia is that people can not see objects near clearly and those far away are the same as before. The old man without myopia has presbyopia. He doesn’t need glasses to see far away, but only when he sees close. However, people who are short-sighted have presbyopia. They still have to use short-sighted glasses to see far away. They may not be able to see near.

why? This is because myopia and presbyopia can offset this part of “seeing close”. Therefore, people with low myopia can see close by taking off their glasses, while people with medium and high myopia need glasses of different degrees to see far and near.

for example, some people have 600 degrees of myopia and 250 degrees of presbyopia. After offsetting these 250 degrees, they still need 350 degrees of myopia glasses when looking close. Some people have myopia of 200 degrees, and presbyopia is also 200 degrees. When he reads books and newspapers, he can not wear presbyopia glasses, but he still has presbyopia, which is just offset by the lens degree.

with age, people will slowly age, and so will eyes. In fact, everyone can’t avoid the emergence of “presbyopia”.

“myopia when young, old will not be old”, is false!

and

suffering from presbyopia should pay attention to correction. They must go to the ophthalmology of a regular hospital for far vision examination and optometry test, and recheck every two years. Do not buy finished presbyopia without knowing their refractive state and pupil distance. Do not listen to the rumor that “myopia will not become presbyopia”, and do not pay attention to the prevention and treatment of presbyopia.

conclusion: rumor cracking.

people can not be short-sighted or hyperopia, but they can’t escape presbyopia. The pathogenesis of myopia and presbyopia can not offset each other, so at the age of presbyopia symptoms, you may even need a pair of myopia and presbyopic glasses.