These are the most common of the benign functional cysts (functional meaning in response to a normal menstrual cycle). Each time an egg is produced by the ovary a small cyst forms. The cyst is usually very small and ruptures when releasing the egg during ovulation.
Bifocal safety glasses not only protect the doctor (or technician or nurse) and the patient from the spread of infection, but they give the magnification needed to quickly spot the problem and read charts. In fact, we think theyâre as essential as that prescription pad and pen in every doctorâs lab coat pocket.
Fascinating facts about the invention of Bifocals by Benjamin Franklin in 1760. bifocal glasses Glass lenses, for use as magnifiers or for starting fires, date to about 300 BC, but the first eyeglasses to aid or correct vision were almost certainly invented in 1280 in Florence, Italy by the Dominican friar Alessandro della Spina and / or his friend, the physicist Salvino degli Armati.