1. The wall eye chart is the familiar chart with the big letter or symbol at the top and progressively smaller letters at the bottom of the chart down to 20/20 or better. 2. The eye chart assists in measuring visual acuity at a distance of 20 feet away from the viewer. 3. The chart made of high-quality and can be easily cleaned even if it gets dirty. 4. Thick PVC material makes the chart more durable, not easy to be folded like paper. 5. Clear printed eye chart that does not easily fall off Specifications: Size: 22(height)x10.8(width) Inches,thickness 0.3mm Chart weight: 52.2g Colour:White Material:PVC Package Contents: 1 * Eye Chart 1 * Eye-covering spoon(Styles shipped randomly, don't accept the specified Styles ) 1 * indicator stick 4 * Double sided tape