The size of the lens can be changed through secondary polishing and then replaced with a frame. However, the lens parameters after secondary processing will change, especially lenses with astigmatism, which will have a greater impact.

Lens are generally coated with coatings, such as anti-reflection coating, hard coating, anti-UV film, anti-radiation film, etc. Some lenses are also waterproof, oil-proof, dirt-resistant, anti-static, and anti-reflective. Wait for the treatment of the film layer, so it is best not to polish the lens twice after it is fitted, otherwise it will damage the lens.

Glasses also have a service life. Glasses that are used for too long will cause problems such as frame deformation, lens wear, and optical center deviation, so they need to be replaced in time. If it is not replaced in time, it will cause visual fatigue and increase the degree of myopia of the eyes.

Some processed lenses can also be resized, but the following conditions must be met:

1. The new frame shape is smaller than the original frame shape (the new lens shape is smaller than the original frame shape) Lens shape);

2. The interpupillary distance value does not change or is within the scope of national standards;

3. The lenses that need to be changed are preferably low-power spectacle lenses.

If the above three conditions are met, the lens size can still be changed.

Can I exchange large lenses for small frames?

The lenses of large-frame glasses can be replaced with small frames, but this will change the interpupillary distance and the best optical effect will not be achieved after modification.

You can wear frames with lenses, but the prerequisite for using old lenses with new glasses is that the size of the frames must be exactly the same. Being exactly the same means that users must buy glasses of the same brand and model. Because as long as it is a different frame, the lenses need to be polished again before they can be installed, and secondary processing of the lenses is generally not recommended. Secondly polished lenses will change the original interpupillary distance and the axis of astigmatism, thereby affecting vision.