By the time I finally made it, I must have been really worn out. I fell asleep fairly quickly, and didn't wake up until my alarm went off this morning.
When I started to get out of bed, my eyes tired and sand-filled, I began by searching for my glasses. They weren't on the nightstand anywhere that I could find. I glanced underneath the bed in case they had fallen, but didn't see anything. I decided that it didn't matter; I would just put in my contacts and look for the darn glasses later on.
Blearily I stumbled down the stairs with my eyes barely open, used the toilet, and washed my hands. Then I pulled my contact case off the shelf, opened the right side, and stuck my finger in to find....no contact. After a few tired and confused stabs with my finger looking for it, I realized it wasn't in there. I looked at the lid, in case it was stuck there. It wasn't.
I glanced helplessly around the bathroom in confusion. What was going on? Then I blinked hard several times, and realized: my vision was actually much better than usual. A few more blicks and sticky eye-rubs, and I could see. I had left my contacts in all night.
Oh, so that explains the missing glasses and contact lenses! Strange though. I usually always remove them, no matter how tired I am. I can't remember the last time I've forgotten to take them out.