Why you need this?
Scientific studies have shown that your vision can actually be distorted using your hand to cover your eye and studies have proven that vision tests done without the use of a eye spoon can give false visual acuity test results. So, we suggest you cover your eye by occluder instead of hands.

Specification:
Application: Eye Occluder
Color: Black
Material:Plastic
How to use: Shaped to cover either eye during an eye examination
Package:1 x Eye occluder