Both horrible accidents :(
Accidents are just that though - accidents. I was thinking about all the don't let your dog play with sticks/drink out of puddles etc the other day when I hit my youngest in the eye with a tennis ball

I have one of these plastic ball throwers, which the collies love. I tried to fling the ball, but it didn't come out until near the bottom of the arc - and went straight into poor Gems head at close range. The poor wee souls second eyelid is still prominent and she still has a bit of swelling :( I'll still play with the ball thrower though, just be a bit more careful :)