DescriptionThe eye patch is shaped to occlude eye without pressure. It is constructed of premium durable plastic. Great instrument for optometrist. Fit for all people,Preschool, kindergarten children, school children, adolescents, adults, and the elderly. It's a must for family, school and hospital.Features- Material: Plastic. - Made of high-quality 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. - 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.