We went to the eye vet and got his graft eye opened. It will be much easier for him, now. The cone will still be on for 4 weeks or so, but now he can manoeuvre a lot better.
Here's a picture of before the injury and today. The graft will calm down and the cloudiness will go away.
Eye grafts certainly aren't any fun. Our Gertie had one done 5 years ago and the last few stitches only fell out a month or two ago. We saw an odd circle in her eye and thought she had hurt it again but it turned out to be a loop of very fine thread. Her graft is also much smaller now.