Universal Blindness - What does this datapack do?

This unique datapack alters mob behavior in the game when they are under the blindness effect. Now creatures will only be able to see the player and other objects within 4 blocks, which fully corresponds to how the blindness effect works for the player themselves.

How does it work technically?

When blindness is applied to a mob, the system automatically reduces its target detection range to 4 blocks. Once the effect disappears, the detection range returns to its original values. This creates more balanced and realistic gameplay where blindness affects all game participants equally.