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.
Judging by your prescription I would say that it's unlikely to be just the prescription that is causing you the problems, as I see very little change overall in your prescription from last year. A -0.50 cyl isn't really a huge jump in prescription. If there had been a massive jump in prescription, I would have agreed that this would be the sole cause of your problem. You don't say how long you've had the spectacles, nor do you say the reason for only wearing contact lenses for the last 10 years.