My cat has one dilated eye after shots. Is this a vet emergency?

Horner's syndrome can result due to an ear cleaning if there was damage done to the ear during the cleaning, but it can also result from an ear infection, blunt force trauma, and disease of the eye among other things. If Munna had Horner's syndrome, you would see other symptoms such as drooping of the eyelid of the affected side, the third eyelid would be raised and appear red, and the affected eye may appear sunken. Moon should see a vet for this immediately. It's very serious when one eye suddenly is dilated while the other is not. The vet can diagnose what is causing this to occur, and can treat him for it. Please take him into a vet now.

Sometimes vaccines can result in some discomfort and lethargy, but usually only for 24 hours or so afterwards. If it has been longer than that since she was vaccinated it is unlikely to be due to the vaccines. If one pupil is consistently larger than the other that is abnormal however and I would recommend you take her back to the vet to be checked out.

What Lucifer is experiencing may be symptoms of an allergic reaction. Other medications (such as topical flea/tick treatments) can sometimes cause this type of a reaction as well. Because this behavior is unusual, it would be a good idea to go in for a recheck exam with your veterinarian just to be safe.

Yes, that is definitely something you should be worried about. What you are seeing is called anisocoria, and when it suddenly appears, it is a medical emergency. This can be due to corneal injury, disease or injury to the brain, disease or injury to the nerves running to the eye, or uveitis among other causes. I would take Ace into an ER vet or find a vet on call to see him ASAP to diagnose what is causing the anisocoria so it can be treated.

You need to take Naila into a vet immediately, this is a medical emergency. I would be very concerned she has head trauma, which would cause the head tilt, blood from the nose, and the anisocoria (one pupil more dilated than the other). When anisocoria comes on suddenly, this is a medical emergency. Please take her into an ER vet clinic; if there isn't one in your area, there will be a vet on call for emergencies. The information to reach that vet is found on a clinic's answering machine or website. I hope this helps!

You need to take your cat to the vet asap as an enlarged eyeball is an emergency as it could be indicative of my a life threatening condition glaucoma. Otherwise it could be an infection called uveitis.

Yes, unequal pupil sizes can indicate trauma or neurological disease. Schedule an exam with your veterinarian today or tomorrow at the latest. Monitor for ataxia (wobbly gait), weakness, lethargy or head tilting.