1. The problem statement, all variables and given/known data While carrying contact lenses of D=-2.00 diopters, a nearsighted person takes a vision test and finds that his/her far point is 10.0m a) what is the person's far point without contact lenses? b) what lens power is required to correct the myopia fully? 2. Relevant equations 1/f = 1/o + 1/i D=1/f 3. The attempt at a solution This problem was for homework in our optics class, but I don't know how to start the problem. Its not like the usual problems i've been doing. Any help would be greatly appreciated.