What are the precautions to wear glasses?

1, the lens material to light, thin is better, the light transmittance and refractive index to high, wear-resistant at the same time, not easy to break.

2, need long-term wear glasses, choose safety lenses.

3, a high degree of astigmatism glasses, in order to achieve accurate axis, it is best not to choose a circular frame, switch to a square frame more appropriate.

4, reading glasses should be high transmittance glass suitable.

5, parallax more than 250 degrees or more than 600 degrees high myopia, the frame should be mainly small round.

6, always pay attention to keep the lens clean, it is best to use glasses cloth to wipe the lens.

7, to see the distance and look close to the glasses to match.

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