Pinhole Glasses For Vision Improvement, Black Neutral Vision Enhancement Pinhole Glasses Pinhole Glasses for Vision Improvement, Black Neutral Vision Enhancement Pinhole Glasses, Black, 146mmFeatures: Use these pinhole glasses, help to exercise eye muscles and relax eyes, greatly improve your vision The pinhole design allows only narrow beams to enter your eyes, improves focus, helps relax eye muscles, and reduces fatigue This glasses 15 minutes a day, can activate your natural vision ability to see clearly and reduce the dependence on glasses Pinhole glasses can be worn by anyone, whether you are nearsighted or farsighted, suitable for short and long distancesNote: Manual measurement, there may be 1-2cm/1-3g error, which is not a quality problem Due to different screen displays, there may be a color difference between the real object and the picture Delivery Quantity: 1