procedural eye shader for blender cycles Low-poly 3D model

this is meant to be downloaded and used primaraly in blender cycles 4.3 however i have included some texture files for use outside of blender including grey, blue, green, brown, and purple as well as all the relevant maps such as roughness and metalic. The blender file comes with the eye model an outer shader and an iner shader each with there own node group settings the irus has multipe options for color and positions of the different eye rings including the ability to swap the pupil color and adjust its shape. while the outer eyes colors can be changed[excluding the eyewhite sorry] the veins can also be made more plenteful of reduced all with just a slider.