The 38th edition optometry tool features a scientific hidden number design and red-green blind spot recognition technology, with high-contrast blue-yellow displays for accurate screening. Its album-style binding ensures easy portability and storage, making it the gold standard for detecting color blindness and weakness. Ideal for optical shops, hospitals, and training centers, this pseudo-isochromatic plate set delivers reliable results for professional vision care and routine eye health screenings.

Specification:
Product Name: Color Blindness Test Book
Product Material: Black coated paper
Target Audience: Color blindness screening
Product Weight: 650g
Product Dimensions: 19*14.8*4 cm (7.48*5.83*1.57 in)
Packaging Dimensions: 21.2*16*4.5 cm (8.35*6.3*1.77 in)

Packing list:
1*Color Blind Test Chart

Notes:
1. Please allow 2-3 cm difference due to manual measurement.
2. Due to light and screen differences, the product color may be slightly different from the picture.