Dog’s Pupil Size is Small After His Eyes Got Hit by a Tennis Ball – What to Do Next

Miosis refers to the excessive shrinking of the pupil and this is what you are probably seeing after your dog’s eye got accidentally hit by a tennis ball.

The decreasing size of the pupil is a common reaction to blunt trauma to the eye. In mild cases, the dog’s eye will sort itself out and the pupil will return to its normal state after the soreness and swelling goes away.

In not-so-simple cases, the trauma caused by the tennis ball may lead to damage like corneal abrasion. In addition to the small pupil size, dogs affected by this may squint their eyes a lot and have trouble opening their eyes. Their eyes may also be sensitive to bright light.

What to do if your dog’s eyes got hit by a tennis ball

It’s best to play it safe. Call the vet and explain your situation. They will be able to advise whether a trip to the clinic is necessary for further diagnostics on your dog’s eyes. If the tennis ball did cause a scratch or corneal abrasion, medication like antibiotic drops may be necessary to help your dog recover and have the pupil size return to its normal state.

In the meantime, further damage to your dog’s eye can be prevented by placing an Elizabeth collar around the dog’s neck. This prevents the dog from using his paws to aggravate the eye injury, whether that be by pawing or rubbing.