Ishihara Color Blindness Test Plate - Identify Red-Green Deficiency #192124 (License: Personal Use)

This circular Ishihara test plate uses a mosaic of colored dots-primarily red, orange, and gray-green-to conceal the number 74 for individuals with normal color vision. Those with deuteranopia or protanopia may perceive only the background or misread the digits due to reduced contrast between red and green hues. It’s one of the most widely used screening tools in ophthalmology and vision assessments.

Used in clinical eye exams, online vision screenings, educational materials, and accessibility testing; matches user intent to self-assess or learn about color vision deficiency.