You can easily create high quality human eyes using these textures and a simple sphere 2 tiles. just put the texture on sphere then human eye is DONE!!!

you can make your custom eye material by the sbsar file.( change everything like sclera ,iris ,pupil blood vessel in colors and size and roughness)

NOTE : SBS File Only For Extended Commercial License.

Product features :

SBS file and SBSAR File
4k PBR Textures IN PNG 16bit of five eye material
High Detail
Realistic
100 % Made By Substance Designer !!!