However, when looking up close, due to the triple linkage of the eyes (pupil reduction, adjustment, and convergence), the eyes need to move downwards towards the eyeglass online optical center, and the eye position needs to be cohesive.
It is inevitable to use lenses to gaze at non central areas. At this time, a strong cohesive ability is needed to overcome the problem brought by the uncoordinated prism between the eyes.
So how to deal with the problem of uncoordinated prism nearby?
The first method is to pair it with a pair of close range imaging eyeglass online, which can be used in one step. The distance between the pupils is close and the pupil height is high. If the ability to gather and disperse or adjust is poor, corresponding measures can be taken ➕ Prism offsets or reduces the corresponding degree, which not only makes changing glasses back and forth troublesome, but also perfectly solves visual fatigue.
The second method is to avoid looking too close. When it is necessary to look too close, adjust the position and try to focus on the object through the optical center as much as possible. You can move the frame down or the object up, preferably in a head up position.
The third method is to strengthen one's adaptability to overcome the prism effect by training their ability to gather and disperse, as well as their ability to regulate. However, it is still possible for young people, but for those who are older or do not have time to train, it is better to use the first method directly.
Isomerization refers to the equipartition between the optical center and the edge of the lens, which is not the same as the binocular equipartition caused by anisometropia. You need to pair the lens with binocular equipartition, and the prism effect is present in any lens.
