An Eye Procedural Substance Material.
PBR - Metallic Roughness
Import it into Game Engines that has support to Substance from Allegorithmic
Or export the maps using Substance Player (free)
https://www.allegorithmic.com/products/substance-player
Commercial use of the materials is permitted but nothing can be included in an asset pack or sold at any sort of asset/resource marketplace and must be embedded components in media such as a video game, movies, or similar products.
Make sure to get the correct License for your needs, Studio, Indie, Personal (Commercial) and Personal (Non-Commercial) available.
Unity Engine integration coming soon!
Thanks for your support!