Protanopia Color Blindness Shaders (1.21.8) – Color Vision Deficiency Simulation

Protanopia Color Blindness Shaders (1.21.8, 1.20.1) is a specialized Optifine shader designed to simulate red-green color vision deficiency, commonly known as protanopia. Unlike typical resource pack shaders, this one focuses purely on visual perception mimicking how individuals with color blindness see the Minecraft world.

By adjusting the game’s color palette and filtering out red hues, this shader helps raise awareness about how color-deficient vision works. It can be useful for educational purposes, accessibility testing, or simply experiencing Minecraft from a different visual perspective. The shader is not intended as a fix for color blindness, but rather as a visual simulation tool that recreates how cone cells in the retina misinterpret red light input.

Features

• Simulates protanopia (red-green color blindness)
• Designed as an Optifine shader, not a resource pack
• Alters the color spectrum to reflect real-world visual deficiency
• Useful for accessibility testing or awareness
• Works with most Minecraft versions supporting Optifine
• Lightweight and easy to install

Screenshots:

Example

Comparison

Protanopia Landscape

Requires:

Optifine HD

How to install:

• Please visit the following link for full instructions: How To Download & Install Shaders with OptiFine