I think you may need to look at thing such as dehydration or cleaning the environment, I recently had precisely the same issue with my male : he was walking around with both eyes shut.
I gave him a good watering with warm water ( sprayed directly on his face and body and near his eyes too - as they can sometime stick).
This did the trick and he is walking around happy as larry now, but has become more placid - part of me thinks he sort of knows that I was holding him when he was ill and I was sorting him out. But he became normal overnight, the next morning he was fine.
1. Ensure there is plenty of ventilation ( to stop respiratory disease)
2. Ensure you don't mist him TOO MUCH as the air can go stagnant
3. Ensure that your basking temp is about 30 Celsius and your ambient ( diagonally opposite the basking point and at the bottom or a 3rd up from the floor) is about 20 degrees celcius - if it gets too hot / dry the eyelids can 'stick'
Hopefully all will be good,. I was having a right panic the other day and I learnt all of this from just asking my pet store and asking for help on here. Hope we hear good news about your chameleons recovery
