It happened to me last Sept,dog took the large rabbit through an open gate onto the stubble,after a couple of bends she connected with her quarry,she retrieved it and also picked up a couple of rabbits on the way bac to the car. Checked dog all over before kennelling for the night,next morning bitches eye looked deflated,turns out it was punctured just off centre of the pupil, had her eyelid stitched closed to encourage blood vessels to travel in to the wound,after 3 weeks stitches were removed, eye had healed really well, now only left with a small grey scar on the eye.