What's the best cheap eye drops for red, irritable eyes?

I'm 27 y/o and work at a computer most of the day. I've never had any eye problems or wore contacts. By the time I get home, my eyes are red and relatively painful.

Do you recommend I get eye drops to help with this problem? Are they safe to use every day? Will I become addicted, and do you think I'll always need them from now on? What's the best cheap solution I can buy?

Last night I tried this: http://www.cvs.com/CVSApp/catalog/shop_product_detail.jsp?skuId=694949&productId=694949&WT.mc_id=Shopping_Feed_Products_Google_Free_Listing

They're the CVS knockoff of this: http://www.buy.com/prod/systane-long-lasting-lubricant-eye-drops-0-5-oz/q/sellerid/30485430/loc/67984/215955339.html

Does it matter whether I choose the name brand solution or the imitation?

Thanks!

[Ray T Oyakawa, MD]

First you should get an eye exam and determine if there is a medical problem.  Most patient with normal eyes will not have your problem.

Dr. O.