"This professional Snellen eye chart is designed for vision testing at the standard 20 feet test distance. It features large, progressively smaller letters and red and green color bars for visual acuity and color vision testing. Ideal for optometrists, medical offices, schools, or home use, this chart helps measure vision and track eye health conveniently. The set includes an eye occluder, a pointer, and fixing stickers for easy installation. Crafted from durable, washable plastic, it serves as both a functional testing tool and subtle medical decor. For any questions, our customer support is available to assist you. Use this reliable tool for regular eye exams to note vision changes and maintain visual performance."