Abstract: if the elderly suddenly improve their eyesight, it is not that the presbyopia and myopia offset each other, but may be caused by the change of lens refractive ability caused by cataract. This improvement is temporary. It is recommended to go to a professional hospital for relevant examination., Most people have different degrees of old flowers after the age of 40. However, for Lao Hua, many people have only a half understanding. Coupled with some “knowledge” from hearsay, there are many misunderstandings about Lao Hua., What’s the matter with presbyopia?, Presbyopia, that is, presbyopia, is a physiological phenomenon. It is not a pathological state and does not belong to ametropia. It is due to the reduction of lens regulation ability and the inability to adjust the eyes from far to near. It is a visual problem that most people will have when they enter the middle and old age., What performance tells you that you may have presbyopia?, ● small characters are seen from the usual distance, with double shadow, unclear or serial;, ● unconsciously tilt your head back or take the reading object to a farther place during close reading;, ● brighter lighting is required for close reading;, ● the sight can’t last long, and the eyes will swell, sour, even headache and irritability after a long time.,
most people have different degrees of old flowers after the age of 40. However, for Lao Hua, many people have a half understanding. Coupled with some “knowledge” from hearsay, there are many misunderstandings about Lao Hua.
what’s the matter with presbyopia?
presbyopia is a physiological phenomenon. It is not a pathological state and does not belong to ametropia. It is due to the reduction of lens regulation ability and the inability to adjust the eyes from far to near. It is a visual problem that most people will have when they enter the middle and old age. What performance of
and
tell you that presbyopia may appear?
● see small characters from the usual distance, with ghosting, unclear or serial;
● unconsciously tilt your head back or take the reading object to a farther place during close reading;
● brighter lighting is required for close reading;
and
● seeing close can not last long. Over time, it will cause eye swelling, eye acid, and even headache and irritability.
about presbyopia, most people have these misunderstandings
1 Presbyopia is hyperopia
and
. Because presbyopia and hyperopia can be corrected by convex lens, they are often mistaken for the same thing. Hyperopia is due to the relatively short axis of the eye. The light entering the eye falls behind the retina and cannot form a clear image on the retina. You need to wear convex lenses to see far and near. Old flowers are an aging phenomenon of the body, People without ametropia (myopia, hyperopia, astigmatism) only need to wear convex lenses when looking close.
2. If they are short-sighted, they will not get presbyopia
Presbyopia is a normal physiological phenomenon, and so will people with myopia. Some people with myopia don’t have the symptoms of presbyopia when they are old, not because they don’t have presbyopia, but because the degree of myopia is close to that of presbyopia, which just makes up for the lack of eye adjustment ability brought by presbyopia and makes the object image fall on the retina.
if the myopia is low and the presbyopia is high, you still need to wear convex lenses when looking close; On the contrary, if the degree of myopia is high and the degree of presbyopia is low, the degree of myopia needs to be shallow when looking close.
it should be noted that if the elderly suddenly improve their eyesight, it is not that the degree of presbyopia and myopia offset each other, but may be caused by the change of lens refractive ability caused by cataract. This improvement is temporary. It is recommended to go to a professional hospital for relevant examination.
3. Presbyopic glasses can be matched with
and
at will. After presbyopic glasses appear, many people often take the price as the first reference standard in the selection of presbyopic glasses, and even buy presbyopic glasses directly at the stall. However, wearing inappropriate reading glasses will cause many physical discomfort symptoms. The fitting of
and
presbyopic glasses needs to consider many factors, which is a complex process. It is recommended to go to a glasses store or hospital with professional qualifications for fitting. Different people can wear different lenses. For those who have never worn glasses, have normal far vision, and only read books and newspapers when looking close, they can choose single focus presbyopic glasses; Doctors, teachers and other people can choose to wear progressive multifocal presbyopic glasses because they need to change the distance, middle and near frequently.