Check the listing for details. 4x Unisex Small hole Glasses Eye Correction Exercise Eyesight Care Improveme. Condition: New with tags. Listed at 9.84 USD. Description: It 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. Features: -100% Brand new and high quality -Wearing for 15 minutes one day will help to improve your eyesight within weeks -Activates your natural vision ability to see clearly -Eliminates stress and strain caused by glasses -Helps you see clearly near and far -Promotes vision habits Small hole Glasses Do Well in The Following Eye Problems: Myopia (short sightedness) Hyperopia (long sightedness) Presbyopia (age-related reduced range of focus) Eye strain (from computer screen) Specification: Color: Black Material: PC+AC Classic:width is 146mm, height of the frame is 49mm, distance between the bridge of the nose is 16mm Notes:Please allow slight measuring deviation due to manual measurement. Packing content: 4X small hole glasses