Eye Removal Surgery (Enucleation) In Cats

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Eye removal in cats

Enucleation is the medical term for the removal of the entire eyeball. Removing the eye is often a very difficult decision for the pet owner to make, but always the right one. Cats do fine with one eye and can live out a long and happy life. The loss of an eye should have very little impact on your cat’s quality of life. In most cases, it will be improved if your cat has been living with pain and discomfort for a while.

What are the reasons for eye removal?

There are a number of indications for enucleation where the eye is either blind or painful, which are unresponsive to treatment.

Tumours – This may either be cancer of the eye (on the outside or inside the globe) or cancer behind the eye. There are several types of cancer which can affect the cat’s eye including iris melanoma, conjunctival squamous cell carcinoma, intraocular lymphosarcoma and iris/ciliary body melanoma. These cancers have the potential to spread (metastasise) to other parts of the body. Most information discusses removal of the eye due to intraocular malignancy, however, in some cases, cancer may be behind the eye, such as in the case of my own cat who had osteosarcoma.

Eye infection or inflammation  – There are many causes of eye infection or inflammation in cats some are the result of infections such as herpes,  injuries or scratches may occur to the eye resulting in an infection which remains unresponsive to treatment.

Severe glaucoma – Increased pressure within the eye which causes pain and loss of sight.

Phthisis bulbi – A shrunken and non-functional globe which occurs due to trauma or severe ocular disease.

Severe trauma – Such as a globe rupture. There is always a risk that the cat will develop sympathetic ophthalmia, in which the undamaged eye becomes inflamed and can potentially lose vision. Removing the damaged eye prevents this condition.

Congenital deformities – These may render the eye unworkable or abnormalities can lead to permanent damage over time requiring the eye be removed.

Enucleation is a last resort surgery when there is no hope of sparing the eye or for cases where the cat is in chronic pain.

Enucleation surgery:

There are a number of surgical methods including transconjunctival (subconjunctival) and transpalpebral.  The surgery itself takes approximately one hour.

Prior to surgery, your veterinarian will discuss with you the option of a prosthetic eye. There are no benefits to this other than aesthetics.

  • A 12 hour fasting period will be necessary before surgery. This is a safety measure in case your cat vomits while he is unconscious.
  • The area around the eye is clipped (eyelashes trimmed) and the entire area including the globe and skin around the eye are disinfected with a povidone-iodine solution.
  • The cat is put under general anesthesia.
  • The surgery itself varies depending on the technique and is beyond the scope of this article. A detailed explanation of enucleation surgery can be found here. The entire globe, eyelids, muscles, soft tissue around the eye and optic nerve are removed.  The area is sutured closed with dissolvable stitches or stitches which will require removal 10-14 days after surgery.

Post surgery: 

Your cat will stay overnight in the veterinary practice for monitoring.

Your veterinarian will provide antibiotics, painkillers, and anti-inflammatories at the time of discharge. Administer as prescribed.

It will be necessary for the cat to wear an Elizabethan collar until the surgery site has healed, which takes between 7-14 days.

Wipe the eye daily with a damp gauze.

Mild swelling is common after surgery, usually due to the formation of a hematoma underneath the eyelid. If you notice severe swelling or oozing from the area, contact your veterinarian immediately. A warm compress can relieve discomfort.

Keep the cat inside during the recovery period.

Recovery: 

The time it takes to recover will depend on the age and overall health of your cat. Your cat will experience some soreness and possibly swelling for a few days post-surgery. Some cats will bleed from the nose following surgery, this is normal and should stop within 1-2 days.

Long-term the outcome is good, there will be some loss of binocular vision, however, most cats adapt well and do fine with just one eye.

10 COMMENTS

  1. thank you so much for this article. my cat is having enucleation surgery this week. i wonder if he’ll be more comfortable and happier after the surgery. he has diffuse iris melanoma

  2. I just found out tonight that my cat will have to have the enucleation surgery very soon. He has a made behind his eye and they are assuming it’s a tumor. Thank you for this article. Shannon, I hope your cat is doing well.

  3. Thank you so much, Julia. I truly hope I’m making the right decision. I’ve been sitting here crying because I just feel so bad for him. It sucks and I just want him to be ok. I adopted 7 cats (one has since passed) with FIV. I asked my vet if that would play a major part in this surgery and she said she did t think so. He will heal just fine. I just really hope he will be ok with this. I love them all so much and just want the best for all of them. ☹️

  4. Julia, thank you for the article. My kitten of 2.6 pounds had the surgery and now he is recovering. He has his face swollen and he is having a hard time breathing. He doesn’t want to eat but I am hoping that he will feel better tomorrow. I know he looks disoriented and he is in pain. I am posting this stages of the recovery for extra information.

  5. I am strugging with what to do. My Cat contracted Bartunolo (Cat Scratch Fever) which cause inflamation in both of his eye. I have to give him 3 different eye drops 3X a day. Just had his eye pressure checked and it is back up. Which means he is hurting. I was hoping the 21 days of Antibiotic would also help reduce the inflamation. He will need both eyes out. I do not know what to do. All the drops at $90 a month for the rest of his life (he is almost 12) Family and friends think I am crazy if I choose surgery the cost at that point will be over $4500 It is such a struggle….

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