UCanSee Snellen Eye Chart Visual Acuity Chart with Eye Occluder and Pointer for Eye Exams 20 Feet (22x11 Inches)

Description The Snellen chart is a standard tool used to assess visual acuity. The size of each optotype is meticulously designed following the one-minute visual angle principle, guaranteeing precise measurements for accurate vision testing. If someone has 20/20 vision, it means they can read the line meant to be seen at 20 feet from a distance of 20 feet, which is considered normal visual acuity. If they have 20/40 vision, it means they can read at 20 feet what someone with normal vision can read at 40 feet, indicating that their visual acuity is somewhat impaired. Product Features 1.Made from PVC material, this chart boasts both sturdiness and waterproof capabilities, ensuring lasting durability. 2.The chart's design follows the principle of one-minute visual angle, providing accurate and reliable measurements for vision testing. 3.Portable and user-friendly, this chart is effortless to use, offering convenience wherever it's needed. 4.Its versatility allows for use in various settings, making it ideal for schools, eye clinics, hospitals, and more. Packing List Eye chart x 1 Eye occluder x 1 Hold Pointer x 1 Product Dimension: 22 x 11 inches Package Dimension: 11.42 x 2.28 x 2.28 inches