Hi, I wear eyeglasses, which is about 10 years old, I like to get a new
pair, the current eyeglasses work ok, the left eye see quite well, but
the right eye seems can't focus well, if I cover my left eye and look
at computer screen, my right eye can't read the text. I went see a
optometrist, here are the old (10 years old) and new eys exam results:

       SPH, CYL, AXIS

old result:

right: -2.50, -1.25, 171
left:   -4.25, -0.75, 17

new result:

right: -2.25, -1.50, 170
left:   -4.50, -1.00, 30

now I am a bit confused, seems like the biggest change is on the left
eye, which looks just fine, the right eye I don't see anything changed
much (I don't know what these numbers mean), which is the reason I like
to get a new pair of eyeglasses in the first place. if with the new
prescription my right eye still can't see clearly, I am concerned. the
optometrist said he doesn't know why my right eye can't see clearly
like my left. any suggestions appreciated!

thanks