The dangers of multifocal glasses

Nowadays, there is a kind of glasses called multifocal glasses. This is a kind of glasses specially developed to address students' bad writing and reading habits. When people wear this kind of glasses to study, they will find that if their sitting posture is incorrect, they will feel blurred vision. Therefore, it can correct people's sitting posture, but what harm will this kind of multifocal glasses do to people's eyes? Let’s take a look below.

Progressive multifocal glasses can help correct bad sitting and reading habits. The astigmatism areas on both sides of the lenses can correct sitting posture. For example, excessive squinting or tilting the head when reading and writing will cause blurry vision, forcing young students to maintain the correct reading and writing posture in order to obtain a complete and clear field of vision. The fitting of progressive multifocal glasses is different from the fitting of general lenses. The whole process is relatively complicated and needs to be performed by a fitter with a certain level of professionalism.

Blurred near vision①The height of the glasses is too small②The distance between the glasses and the eyes is too largeAdjust the nose pads

③ Incorrect prescription: incorrect addition for near vision; incorrect diopter for far vision; re-examination

④Pupillary distance is not accurate, re-order

⑤ The vertical tilt is not enough to adjust the nose pads or temples

⑥Lens base curve problem: adjust frame curve

Cataracts mainly refer to the opacity of the lens. Cataracts are only considered if white spots occur in the lens. If it is on the cornea or in the vitreous, it is not considered a cataract.

Suggestions: Postoperative dietary issues: Keep a good mood, eat regularly, and avoid overeating. Eat more vegetables, fruits and other foods rich in vitamin C and vitamin E. Avoid smoking, drinking, and long-term consumption of irritating foods.

Over time, the eyes will develop myopia in order to adapt to this close-up use. Therefore, we should solve the problem of my daughter's declining eyesight from the root instead of looking everywhere for so-called glasses that can reduce the degree of myopia. This is putting the cart before the horse and is missing the forest for the trees. Knowing the root cause of the occurrence and development of myopia, appropriate measures should be taken to help children develop good eye hygiene habits and strengthen vision care training. Children are still in the growth and development period and their eyeballs have not yet taken shape, so their vision can definitely be restored.

But you must persist in doing it. I hope the following content can really help you. Myopia is a type of refractive error. The phenomenon is that one can see nearby objects clearly but cannot see distant objects clearly. This is because the light entering the eyeball cannot be focused on the retina but falls in front of the retina. Poor visual environment, insufficient light when reading and writing, prolonged close-range eye use, and incorrect reading and writing posture are important causes of the occurrence or development of myopia.

To protect eyesight and prevent myopia, you must understand the basic knowledge of preventing myopia, establish awareness of loving and protecting your eyes, and develop good eye hygiene habits. 1. Maintain correct reading and writing posture 1. Sit upright when reading and writing, keep the distance between your eyes and the book about 33-35 cm (one foot), the distance between your chest and the table should be about one fist, and the distance between the fingers holding the pen and the tip of the pen should be about 3 cm (one inch). 2. The pen should be held at an appropriate angle when writing. When writing with a pencil or fountain pen, the angle between the pen and the paper should be between 40 and 50 degrees. When writing with a brush, try to keep the pen upright. 3. Do not read with your head tilted or lying down, do not read while walking, and do not read on a shaking vehicle or boat. 2. Choose a good visual environment for your eyes. 1. Visual environment requirements for reading and writing. 1. There should be sufficient light when reading and writing, and the light from the window and the desk lamp should come from the front left. Do not read in too bright or too dim light (such as under direct sunlight or in insufficient light in the evening). 2. Try not to use a pen with a lead that is too thin when doing homework. The lead should be of moderate hardness and softness. The homework paper should be clean and the handwriting should not be too small. 3. Choose a suitable desk and chair for reading and writing. The height of the desk should be near the upper abdomen.