Views: 205 Author: Site Editor Publish Time: 2021-07-14 Origin: Site
When we were young, our elders would tell us that "myopia never mind. When you grow old, you won't need to wear any reading glasses." However, myopia and presbyopia, can really "offset"?
Presbyopia is a kind of aging expression of eye regulation in middle-aged and elderly people. Generally speaking, after the age of 45, the ciliary muscle function begins to decline, the lens also begins to dehydrate and harden, lose elasticity, and the eye adjustment function decreases. So you must put the book far away or wear presbyopia glasses to read or need presbyopia reading eyeglasses.
In normal eyes, distant objects emit parallel light, which is refracted by the human refractive system and focused on the retina. For example, multi focal glasses adjust the imaging distance of the image on the retina many times.
For the divergent light emitted by close objects, the human eye needs to adjust the refractive ability of the refractive system to focus on the retina. Because presbyopia does not have sufficient adjustment ability, the same distance near the object imaging in the retina, need to wear glasses, in order to move the imaging to the retina.
Although presbyopia will not have a great impact on the health of vision, long-term uncorrected, not wearing appropriate high quality reading glasses, will have a certain degree of impact on the quality of life. How to tell if you are suffering from presbyopia?
First of all, it is difficult to see things. Patients will gradually find that the usual habit of reading distance cannot see small font, see far but relatively clear. In addition, patients will consciously turn their heads back, or take books and newspapers to a further place, in order to read the words clearly, and the reading distance required increases with age. If not, they need to enlarge the words on the paper, which is why they take a magnifying glass for reading.
Second, reading needs more illumination. Patients may feel uncomfortable reading at night, and the light is dim and can't see clearly. This is because the increased visual resolution threshold makes the pupil dilate, and then forms a large diffusion circle on the retina, which makes the symptoms of presbyopia more obvious.
Then, near vision cannot last. Close objects gradually become far away, patients can still see clearly after efforts, and then look at the near objects, there will be a short time fuzzy, this is the performance of ciliary muscle adjustment response is slow. When the role of ciliary muscle is close to its functional limit, and cannot adhere to work, will produce visual fatigue. This is the cause of some presbyopia patients with bloated eyes, tears, headache, acid eyes, eye pain, eyelid twitch, dry eyes, photophobia, headache, dizziness, nausea, irritability and other symptoms.
Myopia and presbyopia cannot be offset. Myopia is different from presbyopia in pathology. Myopia is due to ametropia, while presbyopia is lens degeneration and loss of elasticity. Clinical manifestations, myopia patients with presbyopia will be slightly lighter than ordinary patients, but this "slow down" degree is quite limited. Serious myopia and presbyopia patients should buy reading glasses to read, and use myopia glasses when looking at a distance, which is more inconvenient than ordinary presbyopia patients.
Magnifying glass cannot replace reading glasses. Using reading magnifier instead of old glasses to read books and newspapers has great harm. Presbyopia glasses also have different degrees. In the early stage, the degree of presbyopia patients is about 100 degrees to 150 degrees, and the magnifying glass is equivalent to 1000 or even 2000 degrees presbyopia glasses. Presbyopia patients or should choose good quality reading glasses, in order to ensure clear vision at the same time can also delay the deepening of presbyopia.
Buy a pair of reading glasses. It is difficult to match the wearer's actual power, pupil distance, face shape and brain type when buying reading glasses with fixed degree and pupil distance on the street. Not only cannot inappropriate cheap reading glasses make the patient's vision achieve the best effect, but will produce visual interference, visual fatigue and other phenomena. Therefore, the purchase of presbyopia glasses or correct prescription reading glasses should be different from person to person and must be checked in hospitals or professional institutions. Wearing a pair of presbyopia glasses for a long time will cause the decrease of luminous flux, affect the imaging quality of lens and accelerate the aging of eyes. Otherwise, wearing inappropriate glasses will only backfire, and even cover up some eye diseases, such as the performance of cataract in the eyes. The aggravation of presbyopia symptoms can cause head and shoulder neck pain, and even lead to autonomic nervous disorder.
Although there are various products on the market, they have not achieved the effect of fundamental treatment. In addition to changing unscientific eye habits, we should choose regular and safe eye care products. Gingereye presbyopia glasses can provide you with a more professional solution. Gingereye glasses have zoom presbyopia glasses, can provide us with the right focus, so as to better fit our eyes.