I had an interesting side effect immediately after switching from Acuvue
to o2 Optix contact lenses.

I have worn Acuvue for many years.  Back in January, I was given a
prescription for either Acuvue or o2 Optix, and told to give the new
lenses  a try, and if I didn't like them to just switch back to Acuvue.

When I went to order lenses, and found that the Acuvue lenses had a
rebate, so I bought those.  When were about to run out recently, I
ordered some o2 Optix to finally try.

Over the last few months, my close vision had become so bad that I
started using magnification to read.  I thought that I was just getting
old, and started carrying reading glasses with me everyplace.  I couldn't
see my watch or read the newspaper.

Almost immediately after putting in the 02 Optix lenses, I noticed that
my close vision returned.  I could not only see my watch, I could read
the tiny fine print.  I could see things I hadn't see up close in a few
years.

I thought it was strange that during eye exams, I would complain about my
close vision, and the Doctor would check it (without the lenses in) and
tell me it wasn't that bad.

I gave him a call a few days ago and told him what had happened.  He was
just kind of quiet and said he had no answer for it.

I have a few of the Acuvue left and checked the boxes against the o2
Optix, and they are the same strength (R-4.75, L-5.00).

I don't want to look a gift horse in the mouth, but I am curious about
why there would be such a dramatic change in close vision between two
different brand lenses.