The "double mirror" is actually a single mirror, and there is no difference in optical properties between the front and back of the single mirror. The reason why it can produce the effect of one-sided reflection is entirely because the two sides of the mirror are in different photometric environments.

The adjustable double mirror is developed by using the principle of adjustment, which fully mobilizes the potential of the eyes and is specially used to improve and improve the adjustment function of the eyes.

Double-sided mirror with its exquisite visual science principle. Brand-new humanistic concept, dexterous modeling and easy-to-learn operation mode have been unanimously recognized by optometry circles and friends.

Extended data:

It is suggested that under the guidance of professionals, double mirrors should be used reasonably. At the same time, please train again 1 week after the symptoms of visual fatigue improve.

To use 1.00-2.00d double mirrors with different degrees, it is generally required to start training from 1.00D, and record the number of changes from positive power to negative power in 1 min at 40cm. Practice both eyes. Every change requires that the font be read clearly. The best way is to flip the lens as soon as possible and read every word aloud.

When getting used to reading distance training, the normal reaction time should not be less than 3 seconds per cycle (one turn+1.00D plus-1.00D, one turn+1.00D plus-1.00D, single turn 0.5d), that is, every minute.

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