A Black. Man, a Moor, John Hanson was the First Black President of the United States! 1781-1782 A.D. George Washington was not the first President of the United States. In fact, the first President of the United States was one John Hanson.
OD is an abbreviation for the Latin oculus dexter, meaning right eye. OS is an abbreviation for the Latin oculus sinister, meaning left eye. The first number after the determination of which eye is the sphere. A negative number indicates myopia. A positive number indicates hyperopia.
Eye pain is also known as ophthalmalgia. Depending on where you experience the discomfort, eye pain can fall into one of two categories: ocular pain (occurs on the eyeâs surface), and orbital pain (occurs within the eye). Eye pain is common, but itâs rarely a symptom of a serious condition.