Is Ativan causing vision problems?

I met someone three weeks ago who is having serious vision problems.

daylight, approaching carlights at night or even televison or movie
screens. Also, she has trouble reading. She is almost always
squinting.

She has been having this problem for the past year and unfortunately
still has to drive her car to get back and forth to work, depending on
the "feel" of the roads she knows very well.

She has been to several doctors and some have blamed her problem on
the Ativan she takes daily. She has been told there is nothing wrong
with her eyes.

I'm concerned that something is seriously wrong with her eyes and that
the sooner she gets help the better.

I probably need to add that she is in her mid thirties and is bipolar
and takes several other prescription daily.

Also, we live in Dallas, Texas.
Any suggestions or referrals would be greatly appreciated!