This Pinhole Glasses Can Help Improve Eyesight

Suitable for both youth and adults

Looks like sunglasses, coating surface reduces light reflection

Reduce eyestrain

You can wear it indoors and outdoors when reading books, using computer or watching TV

Helps to rectify visual problems caused by ammetropia and accommodation, like myopia, astigmatism and hyperopia

Eliminates the strain, tense and twitch of eye accommodation system to prevent myopia

Size: max. 14 cm in width

http://www.1powershop.com/en/others/eyes-exercise-black-pinhole-glasses-vision-eyesight-improve.html