1. When the eye receives too much light, it naturally shrinks the iris. Once the iris shrinks to the limit, then people need to squint. If there is still too much light, such as sunlight reflecting off snow, it can damage the retina.
2. Small hole glasses, relieve fatigue, relax eyes, can not play a therapeutic role
3. Using the principle of pinhole imaging to protect the eyes
4. Anti-fatigue and correct vision
5. Balanced and light frame, easy to wear
6. Prevent myopia, astigmatism, blurred vision, eye fatigue, cataract and other eye problems
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