Hi, I have had the same prescription -1.5 sphere both eyes for about eight years and went to the optometrist to get a test after sudden onset of floaters. Not knowing much she convinced me to immediately change to -0.5 sphere -0.5 cyl. left, and 0 sphere -1.0 cyl right. Somehow I tolerated wearing these for 2 weeks despite seeing worse than with no glasses in low light. I will say in the right lighting my brain seemed to force it to work out alright. I have no idea how she got to that prescription, but went to a new optometrist who came up with -1.0 sphere -0.25 cyl. left, and -0.75 sphere -0.5 cyl after .
My first question is should I even trust the results of this second exam given how drastically off I believe the first change was? Second is, if I did not have any major issues with the simple -1.5 both eyes, should I really start messing around adding astigmatism corrections and different sphere in both eyes (even if it can mean a larger reduction in sphere correction)? It seems I should have simply been given something like -1.25 sphere both eyes as a start.