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)
How to Read Your Eyeglass Prescription. So youâve been handed a piece of paper by your optometrist or ophthalmologist with your eyeglass or contact lens prescription. Perhaps youâve been given these pieces of paper for many years. Itâs full of mysterious abbreviations, terms and numbers, and youâre curiousâ¦. Just what does it all mean? Understanding your eyeglass prescription takes a bit of work, but it can be interesting stuff. Many people are intrigued about what the magic formula their eye doctor has come up with actually says about their eyes.