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.
Sclera (Definition). The sclera is the white hard covering of the eye. It creates the actual eye ball and is made out of dense connective tissue. The conjunctiva is a thin, clear covering to the sclera.