So, how do you deal with the problem of uncoordinated prisms nearby? Also, it is equipped with a pair of close-range cheapest eyeglasses, one step in, using close pupil distance and pupil height.
If the ability to gather and disperse or regulate 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.
Avoid looking too close. When it is necessary to look too close, adjust the position and try to focus on the object through the cheapest eyeglasses optical center as much as possible. You can move the frame down or the object up, preferably in a head-up position.
By training in dispersal and adjustment abilities, one's adaptability can be strengthened to overcome the prism effect. However, for young people, it is still possible. For those who are older or do not have time to train, it is better to use the first method directly.
Why does anisometropia cause visual fatigue? The imaging size of anisometropia is different, and the two eyes cannot merge images. There is no stereoscopic vision, and only one eye can see up and the other eye can see far. Isometric lenses are mainly used to solve this problem.
More or less, there is strabismus in anisometropia, and the lenses themselves have a prism effect. Improper selection of the frame is a prism problem.
At the beginning of image fusion, there is a period of adaptation, and the fatigue caused by working both eyes at the same time will gradually improve. How to achieve the best effect with imaging lenses?
Fitting is of utmost importance and the soul of fitting the cheapest eyeglasses lenses. Isometric lenses require binocular correction, astigmatism correction, and precise axial alignment. These are the fundamental principles for fitting both isometric and regular lenses.
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