Strong birthday throwing cosmetic contact lenses is generally valid for more than three years; As can be seen from the figure, D is the photometric range, the base arc is 8.5mm, and the diameter is14.2 mm. ..

Extended data:

Eye protection strategy

1, disposable lenses are better than traditional lenses, because even if the lenses are cleaned every day, all the dirt can't be completely removed, and the dirt left on the lenses will also hinder the oxygen penetration;

You should wear glasses. When your eyes are uncomfortable, try to take off your contact lenses and put on glasses. Note that not every kind of eye drops is suitable for people wearing contact lenses, so choose one-time individually packaged eye drops;

3. Eye drops can only relieve temporary discomfort. If your eyes often feel uncomfortable after wearing contact lenses, you should check with an optometrist. Corneal hypoxia can lead to wrinkles and edema. The initial symptoms are invisible to the naked eye, but they can be prevented.

4. Check your eyes at the optometrist regularly;

5. After taking off your contact lenses every day, try to rest your eyes 1 to 2 hours, and then close your eyes to sleep.

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