It's been a month since I had Lasik. I waited a good 24 hours to use the computer, but I was able to use it the very next day. Just remember to blink and put in drops at the first sign of dryness. I was told to put drops in every hour, but when using a computer I put them in every 30 minutes. If your eyes start feeling super stressed from using the computer, stop and take a break. Also doing eye stretches really helps.
I had lasik 28 hours ago, and I have been on my laptop most of today. My eyes got tired after about 3 or 4 hours so I took a nap and they feel fine again. I'm sure results vary person to person though.