I was already pretty miserable at this point in my Costa Rica/Panama trip. A few days before I had popped my eardrums badly, and was having hard with balance and hearing. The day after that I caught a nasty cold from keeping my room's AC down too low. So between the popping of my ears, the runny nose, and the drainage in my throat causing me to cough a lot, I didn't notice that my eyes are giving up on me too. To be fair, I wasn't using them all that much that day. The 5+ hour travel day from