Aist Optics Ishihara Test Chart Books Color Vision Test Book with 38 Plate

Key Features:

- A professional test book that easily and accurately identifies congenital color blindness and red-green color blindness, both complete and incomplete forms.

- Includes four special test plates to determine the type and degree of color deficiency.

- Utilizes the characteristic of red-green color blindness, where blue and yellow appear very bright compared to red and green.

- The color plates are packaged in a specially designed album-style booklet for easy operation. Detailed instructions are included.

- People with color deficiency see patterns differently than those with normal color vision.