The textures will be generated automatically only by pressing the F12 key in the scene: Visualization fast (only emission). No more action is required. The file will be saved by default in the "C: \ Eye generator" directory.
The generator will work on any PC that supports Blender, but an i5 processor or higher is recommended. It would also be positive to have a decent graphics card.
Yes, in the new version 1.2 reptilians and cats iris have been included
Of course, this is a full and updated version.
The iris object contains a shape key for this, it is called " Pupil contract"