Thank you. I offered some yogurt and he was more than obliged to nibble a bit, and he will drink if I squirt water along his breek line. I think the discharge is decreasing but has migrated to the other eye; which I have started applying medicine to as well. Tomorrow I'll pick up some antibiotics and see if that improves things a bit. All things considered, he still has enough energy to try and bite my toes so all hope is not lost.
It's hard to say about his comfort. If he is in a coop that has good ventilation, but is not directly where the wind will blow on him, then I am inclined to say he should be fine, but, ultimately you are there to see him. Look for any signs that he may be cool - puffed up, fluffed up feathers, etc.