This LoRA can generate unique iris patterns. 3D artists should be able to use this to texture eyes.

Use the default Stable Diffusion 1.5 model (more modern models have weird effects on the iris texture)

Trained on a dataset of 512x512 and 768x768 images, although it seems to prefer generating at 512x512 and using hires fix. (Latent upscale at 0,6 denoise works well, although you can also use ESRGAN at 0,25. Different hires methods will change the patterns depending on what you're after.)

Generating at 768px will sometimes give results which aren't centered.

Eye colors you can prompt for: Blue, Gray, Hazel, Brown, Green. You might have to edit the colors afterwards if you want something more intense, as this model is based on natural human photos.

Trained on base v1.5 and tested with Euler A sampling method. Your results may vary if you use something else, but feel free to experiment.

I may release an updated version in the future using a higher quality dataset.