It is important to understand the difference between the IIN and NCPDP Processor ID Number (BIN) before applying for a Processor ID Number (BIN).
Sclero-: (Or scler-) A confusing prefix that can refer exclusively to hardness (from the Greek skleros meaning hard) but that can also refer to the sclera of the eye.
noun, Anatomy. 1. a dense, white, fibrous membrane that, with the cornea, forms the external covering of the eyeball. Origin of sclera.