The Grafco Kindergarten Plastic Eye Chart is a snellen eye chart widely used to measure visual acuity by determining the clarity of detailed distance vision that a person can discriminate. Through the complete configuration, the 22-inch by 11-inch eye chart is more scientific ideal for use with patients who are illiterate or not familiar with the Roman alphabet or cannot speak, students, optometrists, offices, & schools in a required 20 feet away from viewer for vision testing. From bandages to sundry jars and everything in between, Grafco products offer healthcare facilities a single source for all their medical-surgical product needs.