King didn't get radicalized by the urban riots of the 1960s or Vietnam; he was already a radical, says Thomas Jackson, author of From Civil Rights to Human Rights: Martin Luther King, Jr. and the Struggle for Economic Justice..
Here are the definitions of the symbols/abbreviations used in a typical contact lens prescription: 1  Eye - Which eyes the prescription line item is for. 2  SPH - Sphere (this can also be referred to as Power or PWR) 3  BC - Base Curve (usually a number between 8 and 10)  DIA - Diameter (usually a number between 13 and 15)
Your prescription can be found on the box on your contact lenses. This is law that your lens prescription must be there and you use it to place your order online. Your prescription is valid for a minimum of 1 year from the date your eye care doctor gives you the prescription. In some states it's 2 years.