My male panther chameleon has had a respiratory infection for quite awhile, i took him to the vet a couple of months ago and he gave me injections to give him and i swab his mouth, he was doing pretty good eating, drinking, active all the normal for a chameleon. But the past couple days i noticed him hanging upside down, at the bottom of his cage just sitting there not moving. I figured maybe he needed to cool down, i took him inside and gave him a shower, i figured out he is blind. I have no idea how he became blind in just a couple days. I am very worried about him, i have to now hand feed and water him. He is always a gray-ish color and he won't move i put towels down as a bedding in case he falls and he will just sit there. Every so often he'll move and kinda get stuck upside down so i move him back up right. Whats going on?!?!??