9" Sleeve:61cm/24

Size table

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Active Noise-Cancellation:Yes

color:#dac8b1

Pin Hole Eye Training Eyewear Exercise Improve Eyesight Sunglasses cf-color-violethigh-1-5cm 9" Sleeve:61cm/24Features: 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