Description The Color Blind TestingCard Album is a comprehensive guide in the form of a hardcover textbook, providing detailed content for convenient self-checking of color blind. It is suitable for drivers to conduct vision tests to assure driving safety. Additionally, it can be used for early detection, providing timely treatment. Making color blind testing easier. Features -Color:As Shown -Material:Paper -Size:9.70X8.50X0.30cm/3.81X3.34X0.12in -A comprehensive and user-friendly hardcover textbook designed for drivers to assess vision for safe driving. -Enables early detection of color visualimpairments for timely treatment. -Specifically designed in english version to facilitate easy testing by english-speaking users. -The book is crafted from stable material, durable and lightweight, easy to use. -Portable and easy to store, making it a practical tool for use in multiple settings. Packing list1 x testing book