+1. The easiest way to tell the difference between ptosis and dermatochalasis (excess eyelid skin) is by lifting the excess skin off of the upper eyelid. If the actual lid margin itself is cutting across the black pupil portion of the eye, then you may have ptosis.
15.1.1 Principal Sum vs. Capital Sum. AD&D benefits are paid through two different methods, though always for a specific amount. Principal Sum; Capital Sum; The principal sum is the stated amount payable as a death benefit if death is due to an accident.
A source of authority; a sum of a debt or obligation producing interest; the head of a school. In an agency relationship, the principal is the person who gives authority to another, called an agent, to act on his or her behalf. In Criminal Law, the principal is the chief actor or perpetrator of a crime; those who aid, abet, counsel, command, or induce the commission of a crime may also be principals.