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)
The Soft Contact Lens Prescription. The soft contact lens is one of the most common forms of corrective lens. A prescription for soft contacts includes a particular brand, as not all styles and materials are the same, and a number of other measurements per eye such as the curvature and diameter of the lens.