I often have friends in their 40s who come to me with complaints of sore eyes, headaches, and vision loss, which is even worse when they spend a lot of time looking at the computer, so much so that it affects their work. After a detailed eye exam, I find no eye abnormalities and tell her that her eyes are presbyopic and she needs to adjust the prescription of her glasses, she will ask me with great confusion: Can people with myopia also suffer from presbyopia? The answer is: Yes. Many people think that people with myopia do not have presbyopia problems, which is a big misconception. Presbyopia is a physiological phenomenon, just like gray hair, that everyone goes through after middle age and no one can escape it. As people age, myopic eyes will also undergo a series of aging degenerative phenomena, and will definitely presbyopia. Nearsightedness is clear when looking at near places and unclear when looking at far places, while presbyopia is manifested as unclear when looking at near places, so people with nearsightedness will change when they reach middle age and look at far and near places. What is the relationship between presbyopia and myopia? In terms of the definition of myopia and presbyopia, myopia is the physiological phenomenon of middle-aged and older people over the age of forty who see clearly in the near and not clearly in the far and need to wear nearsighted glasses; presbyopia is the physiological phenomenon of middle-aged and older people over the age of forty who see increasingly unclearly in the near and look as far as they did when they were younger. Elderly people without myopia do not need to wear glasses when they look far away and need to wear presbyopic glasses when they look close. Myopic glasses are “-” lenses, presbyopic glasses are “+” lenses, when myopic people see near, the glasses can be positive and negative offset, but when looking at the distance is still myopic. Presbyopia is due to the age of the lens adjustment force is weakened and occur, its degree and age-related, with the age and gradually deepen, generally in accordance with the rate of increase of 50 degrees every 5 years, 45 years old when the degree of presbyopia is usually about + 100 to + 150 degrees, 50 years old is about + 200 degrees, 60 years old reached the highest + 300 degrees, after that the eye presbyopia is generally no longer After that, presbyopia usually does not increase. Therefore, people with myopia should refer to their nearsightedness when wearing fancy glasses. For example, a person over 60 years old with -500 degrees of myopia will have a presbyopia of about +300 degrees, which is offset by a positive or negative 300 degrees when looking close, and will also need -200 degrees of myopia glasses when looking close. In life we often see some nearsighted elderly people, when reading take off myopia glasses, sometimes have to then move the book properly to the near or far, is because they are in different degrees of myopia based on the occurrence of different degrees of presbyopia, look at the near part of the degree cancel each other, the residual degree of different causes. At present, there are some special glasses for these people who are both presbyopic and myopic, such as bifocal glasses and multifocal glasses. However, these glasses do not stay the same when they are fitted, as age and cataracts occur, the degree of myopia and presbyopia will change, and perhaps 2-3 years will be needed to change the glasses. In addition, people with myopia also face the problem of presbyopia after cataract surgery. After cataract surgery, your own natural lens is replaced with an artificial lens. The adjustment ability of the lens is gone, and you cannot see far and near as freely as a camera lens. The doctor will help you solve this problem according to your age, occupation, and eye habits, or choose a different style of IOL or wear a different style of glasses after surgery to make your life comfortable and convenient. Presbyopia has a certain relationship with the degree of eye use. Presbyopia will report early when the eyes are overworked. When you are just over 40 years old, you are officially young and active, and no one wants to wear presbyopic glasses.