This Snellen chart features red and green bars for a simple and useful color test. Screens for amblyopia. Snellen optotypes date back to 1862, when Herman Snellen introduced his first eye test in England. These Snellen optotypes have changed little over the years and are still in regular use today. These optotypes have a strong serif pattern and follow the idea of ​​the 5x5 grid. The Snellen chart also features red and green bars for easy color testing.

Features

• The chart features red and green bars for easy and useful color testing.
• Made of extra strong, easy-to-clean, non-reflective, matte PVC material.
• Perfect for optometrists, practices, and other professionals.
• And the top center hole is easy to hang on the wall.
• The eye chart measures 23 x 35.5 cm (9 x 14 inches).
• With pointer stick