What is happening to me? (EYES/VISION)

For the past 3 days I’ve been having problems Focusing.
I don’t know how to describe it, I can see everything clearly (20/20 vision) but you know when you don’t get any sleep, you have this weird feeling and want to throw up? (well I feel like that Minus the throwing up)

I’m in front of the computer all day long (at work and at home) but it’s nothing new, I’ve watched tv and played video games all my life. But nothing like this has ever happened to me before.

I don’t have a headache.

Does anyone know what would cause this?

Also, I’ve been under A LOT of stress…and am also losing my hair :*(

I don’t know if this is true, but I just looked in the mirror and my pupil seems to be expanding and contracting non-stop.

Any ideas? (Besides going to the doctor?)