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Wenzhou Wanrun glasses will help you understand the difference between hyperopia and presbyopia

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Young people get myopia, can old people resist the degree of presbyopia? Can't this be true? In life, people often confuse hyperopia and presbyopia (commonly known as presbyopia), because the performance of hyperopia and presbyopia is similar, they can't see clearly at close range or their eyes are easy to fatigue, and they wear the same type of glasses, all of which are convex lenses. In fact, hyperopia and presbyopia are two different and related concepts. Wenzhou Wanrun glasses manufacturer will take you to have a look.

Hyperopia is defined as: when the adjustment of the eye is relaxed, parallel light passes through the refractive system of the eye and is focused behind the retina, which is called hyperopia (if it is focused before the retina, it is myopia). Anyone will grow old when he reaches a certain age. Presbyopia is that with the growth of age, the lens in the eye gradually hardens, its elasticity weakens, and the ciliary muscle function of the eye gradually decreases, resulting in the decline of the eye's regulatory function.

From about 40 to 50, I began to have difficulties in reading and other close work. This decline in physiological eye regulation caused by age is called presbyopia, which we call presbyopia. Myopia, hyperopia and astigmatism are all refractive errors, which belong to the pathological state of the eye; Presbyopia is a stage that everyone must go through, which belongs to physiological state.

Presbyopia cannot be seen close for a long time. For many presbyopia patients, it is OK at first, but it will not last for too long. Reluctantly reading newspapers is easy to serialize, and the handwriting is paired. Finally, they could not read any more. Some patients even have visual fatigue symptoms such as eye swelling, tears and headache. The above situation may also occur in patients with hyperopia, such as eye acid, headache and other visual fatigue symptoms when reading close, but the age is significantly earlier.

The same point: when I was young, I could see more clearly (some people with medium and high farsightedness could not see clearly); Convex lenses are used for lens matching and correction. Differences: presbyopia usually appeared earlier in hyperopia patients, and the degree of presbyopia was higher than that of their peers; If you have high farsightedness, you should also wear a pair of medium convex lenses to see more clearly.

Remember, presbyopia is a physiological phenomenon. Everyone will have presbyopia when they are old, whether they are nearsighted or farsighted when they are young. Can myopia cause presbyopia? Why do myopic people not need to wear reading glasses to see things close when they are old? After middle-aged and old people are nearsighted, if they still wear glasses that used to be nearsighted to read books and newspapers, they will also have presbyopia symptoms. Taking off short-sighted glasses to read is equivalent to wearing a pair of presbyopia glasses. In popular terms, this is to offset part of presbyopia.

If your eyesight has been good before, you may be old before you are 40 years old, or just over 40 years old, you may have hyperopia. Due to good eye regulation, the vision of hyperopia in young people is "consistent in distance". With the growth of age, adjustment ability decreases, it becomes more and more difficult to see things at close range, and hyperopia is "exposed". The article comes from the Internet. If there is any infringement or violation, please contact us to delete it.

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