One week isn't very long, so it could be any variety of short-term issues. Obviously springtime supports a lot of allergy-producing pollens and other materials, so hopefully it is something simple. But obviously vision isn't something to ignore, so a doctor is the right idea. As I just posted in another question a few days ago, I started taking a supplement called Visiloc for a more serious eye problem. While it hasn't helped that problem yet, I do perceive less eye strain after periods using the computer. Don't know if it will work long term or if it would have any impact on you, but I thought I'd pass along my experience. Good luck.
Thanks for the reply, my eyes still feel really sensitive. I've been constantly researching possible causes.
I'm wondering if it's possible that my eye weakness/sensitivity is caused by a Sinus infection or problem. I've read that your sinuses are very sensitive and a problem with those could cause mild eye problems.