The discount prescription glasses tray must fit the nose to the maximum extent possible to minimize pressure. The ideal state should be to place the double support leaves on the bridge of the nose bone (feel the hard part of your nose, that's it). It's best to adjust the nose pads. This needs to be adjusted.
The discountglasses nose support can only be adjusted under the premise of consistent forward tilt angle. The amplitude of the two mirror legs should be the same, otherwise, the force will be uneven, causing one lens to stick to the face and the other to move away from the face.
Let's observe, let's think, intuition will tell you what to do. You can choose to tighten or loosen the legs with a larger expansion range, depending on whether the frame is loose or tight. If the tension is appropriate, you can loosen it while tightening it.
Several other situations can cause the frame to deform. The lens is too large and stretched out, and the shape of the polished lens cannot match the frame shape well. The protruding parts of the entire frame are uneven, and the half-frame slots are uneven. Installing unsuitable lenses on a nondeformable frame can also cause deformation.
The discountglasses frame is deformed and must be adjusted back to its original position. 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, 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.
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