Hi, I can help you with your question today,
When the discharge becomes dry and hard, you can use a warm compress as you did today.
I also recommend using a sterile eyewash (saline rinse) which is available over the counter at human pharmacies.
To prevent the discharge as much as possible, I also recommend using a rewetting drop.
These are also available over the counter for people.
I recommend using a brand like Blink or Genteal.
Use one of the thicker gel formulations - these say for overnight use.
These thicker drops will last longer so you do not have to apply as often.
Even with the gel formula, you can use as often as every 1-2 hours.
Was the discharge green or yellow in color?
OK, I think he has either conjunctivitis, OR an infection secondary to dry eye (KCS).
How old is he?
Oh I see, it is very common to see conjunctivitis periodically with dogs that have dry eye.
For now, just try to keep them well lubricated with the drops and comfortable with the warm compresses.
When you say you use gel for him in the morning, is this just lubricant drops or is it a medication?
Medications like tacrolimus and cyclosporine can help to control his signs more effectively.
Perfect, it sounds like your vet is doing a wonderful job following up on the dry eye condition.
Now we just need to keep him comfortable until Monday when you can get a prescription topical ophthalmic antibiotic.
You're doing a great job :)
You're welcome! Please let me know if you have further questions. I am happy to continue until I provide the service that you seek.