The method of adjusting the lenses one high and one low is to first check whether the two lenses are symmetrical. The lenses will have a slight forward tilt, and the correct cheapest eyeglasses forward tilt angle is consistent.

If you look down from a high point on one lens and the upper and lower edges coincide, check if the other lens can also achieve the same alignment to determine if the forward tilt angle is correct.

If the other lens does not overlap, it can be determined that the forward tilt angle is different, so it is necessary to hold down the lens and break the other lens. The metal frame can be bent directly (pay attention to the broken edges of the half-frame glasses), while the sheet frame needs to be heated at the center beam position to soften and bend in the correct direction.

After ensuring that the forward tilt angle is consistent, place the glasses on the open table and see if both legs of the cheapest eyeglasses can land at the same time. If the right leg of the eyeglasses is raised, then the right lens must be lower when wearing it on the face.

What we need to do is press down on the right leg of the eyeglasses, so that both legs are pressed down. Or lift up the left eyeglasses leg. The specific adjustment depends on the correct forward tilt angle after adjustment.

When wearing a deformed frame on the face, the lenses are raised and lowered, causing the two optical center points that should be on the same horizontal line to be raised and lowered, seriously affecting the visual effect.

Especially for people with astigmatism, the axis of astigmatism is artificially deviated, causing a decrease in clarity, resulting in visual fatigue and an increase in degree.