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.
Modern Latin; from Classical Greek skl?ros, hard; from Indo-European base an unverified form (s)kel- , to dry out from source shallow. Origin of sclera.