- Item number: 5922489
- Manufacturer item no.: 2023
The Velhagen color chart book is an indispensable tool for testing and diagnosing a possible red-green visual impairment. It contains a series of color charts specifically designed to test and evaluate color vision in patients. Each color chart in this book is carefully designed and presents figures and letters in contrasting colors on a patterned background. The color values of the figures and characters on the charts differ from the values of the background, but the brightness values of the colors remain constant. This allows the color images to be recognized by their color alone, which enables precise testing of color perception. The Velhagen color charts are specially designed to test color vision in patients of different ages and ethnicities.
Velhagen color chart Product details:
- For testing color vision
- Color charts for testing according to Velhagen
- Independent of age