It refers to the development of presbyopia when a person reaches a certain age.

Presbyopia

The so-called "presbyopia" refers to the gradual development of difficulty in reading or working at close range in older people. situation. This is a phenomenon of aging of human body functions.

Presbyopia, also known as presbyopia in medicine, is more common in people over 40 years old. The lens hardens, its elasticity weakens, and the contraction ability of the ciliary muscle decreases, resulting in decreased accommodation. The near point moves far away, so it is difficult to see objects at close range. .This phenomenon is called presbyopia.

The vast majority of people will quietly have "presbyopia" in their eyes around the age of 40 to 45. First, they feel that small handwriting is blurred and they must read books, You have to hold the newspaper far enough to see the writing on it. In fact, presbyopia is a normal physiological phenomenon of the human body and a signal that the body is beginning to age. As we age, the lens of the eye gradually hardens and thickens, and the adjustment ability of the eye muscles also decreases, resulting in a reduced zoom ability. Therefore, when looking at close objects, because the image cannot be fully focused when projected on the retina, the objects at close range will become blurry. Even if you pay attention to protecting your eyes, the degree of presbyopia will increase with age, generally at a rate of 50 degrees every five years. According to the correspondence table between age and presbyopia, most people with good refractive conditions, that is, no myopia or hyperopia, usually have a presbyopia of 100 degrees at the age of 45, which increases to 200 degrees at the age of 55, and to 60 Around the age of 18, the degree will increase to 250 degrees to 300 degrees. After that, the degree of presbyopia in the eyes generally does not increase.

Presbyopia is often regarded as a sign of old age. Many people in their early forties who have presbyopia refuse to wear reading glasses to correct their vision because they are dissatisfied with aging, which in turn increases the burden on their eyes. If people with presbyopia do not wear glasses, even if they can barely see near objects clearly, due to forced adjustment and excessive contraction of the ciliary muscles, various eye fatigue symptoms will occur, such as headache, tight eyebrows, eye pain, blurred vision and other visual fatigue symptoms.

There is also a lot of knowledge in wearing reading glasses. You must undergo an accurate refraction before wearing glasses, and you must re-optate and wear glasses every 5 years. Otherwise, wearing inappropriate glasses will only have the opposite effect, and may even cause harm. It will cover up some eye diseases, such as cataracts, ocular manifestations of diabetes, etc. Modern reading glasses mostly use progressive lenses. The lenses are divided into three parts. The upper part is used to see distant objects (upper light zone), the lower part is used to see close objects (low light zone), and the middle part (mid-light zone) is used to see intermediate distances. The three light zones will gradually change with the depth of the degree, thereby adjusting the viewing of objects at various distances. Wearing it can see both up close and far. When you suffer from vertigo, you must not just buy reading glasses when you see them. In fact, these traditional reading glasses are only used to help you "see up close" and must not be worn when looking far away.

Presbyopia, also known as "visual acuity dysfunction", most directly manifests as symptoms such as blurred reading at close range, fatigue, soreness, excessive tears, photophobia, dryness and accompanying headaches. Middle-aged and elderly people often say "forty-seven or eighty-year-old, dazzled eyes", "eyesight is much worse", and "the eyesight is not good" are all typical symptoms of presbyopia. Significantly reducing work efficiency is the biggest scourge of this disease. Like many chronic diseases, presbyopia often does not receive due attention in its early stages and is treated only after it develops into serious diseases such as cataracts and acute visual impairment, making it more difficult to cure.

Presbyopia is indeed a problem in ophthalmology consultations, because many people can accept glaucoma and cataracts as diseases, but few people agree that presbyopia is a disease. The questions most frequently asked by patients are "Is presbyopia also a disease?", "Does presbyopia need treatment?", "Can presbyopia be cured by drugs?"

Presbyopia is a disease, and it is a serious disease. Without treatment, The consequences are endless.

As an auxiliary tool for "presbyopia", reading glasses can only temporarily read a book, fill in a document, etc., and it is absolutely impossible to "treat" presbyopia.

The cause of presbyopia is excessive accumulation of "lipid peroxide" in the eyes, and too much "lipid peroxide" can easily cause presbyopia, cataracts, cardiovascular and cerebrovascular diseases, etc. Therefore, presbyopia It is the first "yellow card" for human health. If it is not treated in time, there will be endless troubles.

This disease refers to an eye disease in which people over 40 years of age have clear distance vision and blurred near vision. It is equivalent to presbyopia in Western medicine. It is a manifestation of aging changes in the human body and causes crystal beads due to increasing age. Decreased near vision caused by weakened accommodation.

The degree of presbyopia and age?%A