I made a fake eye caustics shader node group just so I could make closeup eye renders like this - Finished Projects - Blender Artists Community

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Skin shader from scratch (version 1.1) - Daz 3D Forums

Stumbling Toward 'Awesomeness'rigging Archives - Stumbling Toward 'Awesomeness

Realistic Eyes in Blender + Free Project - 3DArt

DOA Eye Shaders by RadiantEld on DeviantArt

Blender 4.0 Worked Examples by Sean Erik O'Connor.

Create & Design a Modern 3D House in Blender, Stephen Pearson

Modo Monte-Carlo test > (Octane cycles)

Blend Swap Free Eyeballs + Fake Caustics

ArtStation - Procedural eyes shader - Blender

Seeking Critiques on 100% Procedurally Textured Eye - #20 by skuax - Works in Progress - Blender Artists Community

Bright Caustics Working in 3.4.0 but Not in 4.0.2 - Lighting and Rendering - Blender Artists Community

Fake Caustics in EEVEE :) - User Feedback - Developer Forum