Some pasties are for single-use, while others are washable and can be reused. A sideless bikini bottom is sometimes worn to complement a pasties top outfit, this can be a C-string held by an internal flexible frame or other pasties sustained with adhesive, commonly known as a merkin.
Ptosis is the lagging of an eyelid. It has 2 distinct etiologies. Sympathetics going to the eye innervate Muller's muscle, a small muscle that elevates the eyelid. The III cranial nerve also innervates a much larger muscle that elevates the eye lid: the levator palpebrae. Thus, disruption of either will cause ptosis. The ptosis from a III nerve palsy is of greater severity than the ptosis due to a lesion of the sympathetic pathway, due to the size of the muscles innervated.
The cornea has unmyelinated nerve endings sensitive to touch, temperature and chemicals; a touch of the cornea causes an involuntary reflex to close the eyelid. Because transparency is of prime importance, the cornea does not have blood vessels. Instead, oxygen dissolves in tears and then diffuses throughout the cornea to keep it healthy.