fast positioning signal source

Please allow slight deviation for the measurement

Size table

color:wine red/ rose red/ pink/light blue / orange/ watermelon red

As Asia size is smaller than Europe size

Pin Hole Eye Training Eyewear Exercise Improve Eyesight Sunglasses cf-color-violethigh-1-5cm fast positioning signal sourceFeatures: 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 the 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