First, check if the discount eyeglasses online lens is symmetrical. The lens will have a slight forward tilt, and a consistent forward tilt angle is correct.

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 cheapest eyeglasses online 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 cheap eyeglasses near me on the open table and see if both legs of the glasses can land at the same time.

If the right leg of the mirror 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 mirror, so that both legs are pressed down. Or lift the left mirror leg. The specific adjustment depends on the correct forward tilt angle after adjustment.

Nearsighted lenses are too close to the eye, increasing effective power, while farsightedness is the opposite. Nearsighted lenses have a lower effective power when moved away from the eyes, while farsightedness has the opposite effect.

So this pair of glasses is not the true prescription, especially for people with high myopia or hyperopia, where the prescription changes significantly.