100% brand new and high qualityHelps exercise eye muscles and relax eyesActivate your natural vision to see clearlyWearing it for 15 minutes a day will help improve your vision for a few weeks. May experience 10-20% improvement in vision within 2-4 weeks. Specially designed to improve vision, especially eye focus problemsBenefits of pinhole glasses:myopia (nearsightedness)farsightedness (farsightedness)Presbyopia (age-related reduction in focus)astigmatismcataractEye strain (from computer screen)For adults or children with nearsightedness, farsightedness and astigmatismSize: 15cm(L) * 5. 5cm(W) (approximately)It may be very nervous to wear, you must take off your glasses after a period of time, and you feel pressure on your eyes. Please be careful when buying.Packing list: pinhole glasses*1Item number: L07059