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.
Legal blindness is a term used to establish eligibility for Social Security and other benefits. The next largest letters on most eye charts (2200) is the usual standard. These letters are 10 times larger than 20/20; this refers to best corrected vision only. No permanent damage is done to adults who wear an incorrect eyeglass or contact lens prescription. You may, however, be uncomfortable wearing them and annoyed by the inconvenience.