(CBSNEWS) — The addictive puzzle game “Tetris” may be able to help treat adult amblyopia, a condition known as lazy eye.

Amblyopia occurs when the nerves that connect one of the eyes to the brain do not develop correctly during childhood. As a result, the person sends blurry or wrong images to their brain, which results in the brain ignoring the information and favoring the other eye. Patients may be seen using one eye more or may have problems with depth perception.

According to the National Institutes of Health, two to three out of every 100 children have the condition.

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