HELP! Need more suggestions on what to look for..

I've posted here in the past on a problem I get rarely with vision in
my left eye.

In brief here is the problem: Seldom my left eye seems like it become
more senative to light. Very sensative. In fact, while this happens
brighter light objects (like lights, TV's, computer screens) seem
intense an with a blur or aura and other objects seem dimmer because
my eye appears to be compensating for the brighter lights. This only
seems to last from about a minute to three minutes tops and happens
anywhere from a couple of times a month to maybe every couple of
months. Other times are more intense than others, the more intense
the longer it lasts, the less intense the shorter. During this time I
have no other symptoms except maybe a little anxiety because it makes
me nervous as I don't know what the heck is going on. This has been
happening on and off for over a year and a half. Seems to happen more
often in colder weather if that makes any sense at all. The last few
times it's happened I've noticed it FAR less intense than the first
couple of times it happened... almost like it's getting less as time
goes on.

I've been to my eye doctor, he diolated my eyes, I had a full exam and
everything appears to be perfect. I have some floaters, nothing
major, I've had them for 5+ years, maybe small new ones from time to
time. I am slightly color blind... I've been that way forever. I'm
33 years old..

I talked to my GP on this and he said more than likely it's just a
stress related problem, since I appear to have no other symptoms with
this. I do have a stressful job with a lot of deadlinse and I
communte an hour each way to work, I'm on call 24x7... etc.

I thought maybe this might be related to Caffine intake, so I cut that
down. I thought maybe it had to do with Asprin, but I cut that out
to.

Is this just something I should live with? Or should I look elsewhere
for advise, help. I mean it only bothers me when it happens, but in
the right situation could become annoying. I need to know if anyone
else out there knows of a problem like this if it's just something
I'll overcome or something I should be concerned with a bigger
problem.

Help!

-R