Features:

-Professional test book, is a simple and accurate way to discover congenital color blindness and red-green color blindness, each of which has two forms, complete and incomplete.

-Includes four special test plates for determining the type and degree of color vision deficiency. - Using the characteristics in red-green color blindness, blue and yellow appear significantly brighter than red and green.

-Color plates are attached to a specially designed album-type book for easy operation.

-The graphics seen by people with color vision deficiency must be different from those of people with normal color vision.

Specifications:

Part name: Color difference test book

Material: paper

Size: 19*14.8*4cm

Color: as shown

Quantity: 38 plates

Package Contents:

1*Color Difference Test Book

Note:

1: Please allow 1-2 cm error due to manual measurement, please make sure you do not mind before ordering.

2: Due to the difference between different monitors, the image may not reflect the actual color of the item.