Features:100% Brand new and high qualityIt is now widely accepted that small hole glasses do improve vision for suffering with refractive error eye disorders, even ophthalmologists use small hole equipment to check eyes for refractive disorder. Frequent substitute of prescription glasses(TV, computer, reading) with small hole glasses will result in improved vision, natural and drug-free.Experience 10-20% vision improvement in 2-4 weeks.Wearing for 15 minutes one day will help to improve your eyesight within weeksActivates your natural vision ability to see clearlyEliminates stress and strain caused by glassesHelps you see clearly near and farPromotes vision habitsSmall hole Glasses Do Well in The Following Eye Problems:Myopia (short sightedness)Hyperopia (long sightedness)Presbyopia (age-related reduced range of focus)AstigmatismCataractsEye strain (from computer screen)Specification:box: NoColor: BlackFold size: 142*40*32mmNet weight: 25gPackage weight: 75gPacking content:1 x small hole glasses Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. YJL official store