I'd say eye drops would help, most eye related irritation is actually due to a lack of blinking which is caused by staring at a screen for a long period of time. The lack of blinking causes moisture levels to drop so your eyes become irritated.
Other than that, because you have actual blurred vision, I'd say that sleep should fix it. I'd also suggest not sitting as far away/close to the screen (which ever is appropriate) again and don't game for as long as you did to cause the strain. The lighting in the room could also be a possible thing to look at changing.