Hello, and thanks for writing in.
I'm sorry this happened to Winston.
With any eye injury, it's always best to have him examined as soon as possible, especially if he is winking .
I'm sure the extra treats help! I'm sure he appreciates that.
We tend to not mess around with eye problems, as they can be quite painful.
And, the sooner an eye injury is treated, the better chance there is of healing quicker.
When dogs get hit in the eye, there is a good chance that the cornea (front, clear part of the eyeball) can get scratched, and needs specific medication for treatment.
Overall, my best medical recommendation would be to have him examined tonight (I have seen MANY eye injuries over the years that would have healed quicker if treated right away). Having said that, if he is not winking or rubbing at his eye at all, you could monitor him closely through the night into tomorrow morning. If he shows any signs of winking, rubbing his eye on things (furniture, floor, etc.), pawing at his eye, discharge from the eye, bloodshot appearance to the eye...then I would definitely get him examined right away.
You're very welcome - glad to be here to help. I hope everything goes great with Winston. I will be thinking of you through the weekend.