DescriptionWhy 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.Features- Color: Black. - Material: Plastic. - Size: 25.00 x 2.00 x 2.00cm/ 9.82 x 0.79 x 0.79 inch. - Constructed of thick black plastic with smoothly finished edges, light and large enough to easily cover the eye. - Shaped to cover either eye without pressure during an eye examination durable. - Use with the eye chart(not included), always pay attention to the condition of the eyes. - Fit for all people, preschool / kindergarten children, school children / adolescents, adults, and the elderly. - It's a must for family ,school and hospital. Good quality, can be used for a long period of time.
