Astigmatism

Minecraft through astigmatic eyes. Lighting stays vanilla; the shader changes how the world looks through your eyes.

What it does

• Directional blur: everything smears along one axis. Edges running along it stay sharp, edges across it blur.
• Ghosting: a faint double image, offset along the same axis.
• Light streaks: torches, lanterns, glowstone, fire and the moon stretch into cross-shaped streaks. Each light gets its own tilt depending on where it is on screen, and the streak turns as you look around.
• Halos: a soft glow around lights. The moon glows evenly across its whole disc.
• Only in the dark: streaks and halos appear at night and in caves, and fade away in bright daylight.
• Distance-aware: lights right next to you only glow; the streaks show up on lights further away.

Only real light sources streak. The snow or stone a torch lights up doesn't.

Settings

• Mild, Moderate and Severe presets
• Axis angle, blur and ghosting strength
• Streak brightness, length, angle variation and cross angle
• Halo strength, moon glow, how dark it needs to be, and minimum streak distance

Requirements

• Iris Shaders (works with Sodium)
• The HUD isn't affected