While it was the most deadly earthquake and the fifth deadliest natural disaster in history, there have been earthquakes with higher magnitudes. Aftershocks continued several times a month for half a year.
What eye prescription is considered legally blind? A: In order to be considered legally blind, a person must have a score of no better than 20/200 on a vision test while wearing corrective lenses, according to WebMD. The test may also be administered with a restricted field of vision, but the results must be the same. Continue Reading.
A person is considered legally blind if his or her corrected vision is no better than 20/200, meaning seeing at twenty feet what others see at two hundred feet or having peripheral fields (side vision) of no more than 20 degrees diameter or 10 degrees radius.