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First please understand
the structural features of plastic lens.

Plastic lens consists of a lens material with multi-layer coatings. Therefore, it may crack or peel due to the environment or conditions of use. The following examples explain the reasons for such cracks or peel.

You should understand well the nature of plastic lens and handle it properly for a long and comfortable use of your glasses.

First please understand the structural features of plastic lens. (PDF)

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