Views: 200 Author: Site Editor Publish Time: 2020-12-08 Origin: Site
Now when we want to glasses, shop assistants like to recommend progressive multifocal lenses. But exacprogressive multifocal lenses are not suitable for everyone. Who is suitable for progressive multifocal lenses?
According to experts, progressive multifocal glasses are similar to ordinary monocular glasses in appearance, but actually they are totally different. The upper part of progressive multifocal lenses is designed as far-use luminosity, and the lower part is designed as a continuous "transition zone". The wearer can see the distant and near objects through the remote area and the near area, and they also can see the objects in the middle area.
Gradient multifocal glasses are suitable for people with presbyopia or asthenopia, especially teachers, doctors, musicians, computer operators, etc. After the phenomenon of presbyopia, they not only need to see distant and near objects, but also can see blackboards, piano scores, computer screens and other objects in the middle distance most of the time. At this time, they need to wear digital multifocal lenses or progressive multifocal reading glasses.
A pair of scientific customized sightline multifocal computer reading glasses or progressive reading glasses with transition lenses can meet the requirements of remote use, near use and intermediate distance at the same time. Some special young myopic patients can also wear gradient multifocal glasses to correct diopters and effectively relieve eye fatigue.
However, there are some deformation areas on the left and right sides of the gradual multifocal lenses. For people who are relatively sensitive, it may take time to adapt when they first wear multifocal glasses. That's why some people feel uncomfortable wearing gradient multifocal glasses.
People who are prone to carsickness or have inner ear diseases may suffer from dizziness, nausea, vomiting and other symptoms due to their inability to tolerate the slight deformation of visual objects, and it is difficult to adapt in a short time. The reading area of graded multifocal lenses is lower than that of ordinary bifocal lenses. It is difficult for people with short necks and cervical vertebra problems to maintain such reading posture. In addition, people who are used to bending back and bowing their heads in close reading are also more difficult to adapt to the lens.
It is not recommended for these patients to wear gradient multifocal glasses until the degree of presbyopia reaches 200-300 degrees, because it is difficult to adapt to the gradual multifocal glasses at this time. These patients can try to wear varifocal reading glasses or smart reading glasses. It is also necessary to be careful in the matching of patients with obvious anisometropia (degree difference more than 300 degrees) and high astigmatism.
When wearing gradient multifocal glasses, the eye should be rotated according to the change of the position of the object, rather than the head. The most important thing is accurate optometry and glasses. The public must go to the regular hospital and choose suitable glasses to make them feel comfortable.
