We are not veterinarians so the best we can do is offer you advice and insight from our own experiences with anisocoria.Īlthough there are some instances where anisocoria can resolve on its own (such as if your kitty has Horner’s syndrome), anisocoria is usually a sign that something else is wrong. My vet said she looked good and healthy on paper. My first question is is this true?īecause what worries me is when I told my vet that this is what the veterinary ophthalmologist that he sent us to told me & after he read the report from the Ophthalmologist, he suggested to me that I get a second opinion from a different ophthalmologist!!!!! Oh and Gracies blood work and Felv/FIV tests all came back clean. He said that Anisocoria’s will just appear out of nowhere and then disappear out of nowhere in some cats. So the Ophthalmologist examined her & ran a fluoroscein Stan & a tonometry on her and he told me her eyes looked perfect!!!!! He saw nothing wrong and he couldn’t see any scratches or ulcers & the Anisocoria it’s self might just go away on it own one day. However first he did a geriatric blood panel & a Felv/FIV snap test on her. I noticed my cat Gracie’s right pupil was larger then her left & it was also responding slower (contracting slower to light) so I rushed her to the vet and he recommended us to a veterinary ophthalmologist. But at least the question as to the reason for her Anisocoria will have been answered. Depending on the cause of kitty’s condition, her recovery may be partial or complete. Once you receive a diagnosis, you will also receive a treatment plan. In some cases, where the cause can’t be easily determined, he will refer you to a veterinary ophthalmologist for more highly specialized diagnostic work and a firm diagnosis. He will also need to determine if the cause is ocular or neurological. He may order a complete blood count, biochemical profile and urinalysis to evaluate her overall health. He’ll search for evidence of any injury to her cornea by instilling an eye drop that stains her cornea with a fluorescent dye and by taking scrapings from the surface of her eye. This includes tests to measure the intra-ocular pressure inside her eye as well as her tear production. Your vet will begin with a complete physical followed by a thorough examination of kitty’s affected eye. Medications like atropine that causes the pupil to dilate. Iris atrophy: most often seen in senior cats, the thinning of these colored cells can lead to a change in pupil size in the affected eye. Head trauma: it may cause bleeding inside the brain that produces increased pressure within the skull. Stroke: a rupture or blockage of a blood vessel in the brain causing a loss of blood supply to that area of the brain. Horner’s syndrome: a condition that causes drooping of the upper eyelid and constriction of the pupil. Tumors: brain, eye or optic nerve tumors. Oculomotor nerve paralysis: caused by a head injury, tumor or aneurysm or by such systemic diseases as diabetes and hypertension. Spastic pupil syndrome: a symptom of FeLV (feline leukemia virus) that may alternate between eyes. Glaucoma: increased fluid pressure within the eyeball.Īnterior uveitis: inflammation of the uvea, the pigmented layer of the eye.Ĭorneal ulcers: open sores on the cornea. Odd sized pupils occur for a number of reasons and may or may not be accompanied by other symptoms, depending on the underlying cause.Īn immediate visit to your vet is a MUST if you also notice: a change in the color of kitty’s eye, redness or cloudiness a change in the position of the eye in its socket any abnormal eye movement a drooping eyelid head tilting pawing at the eye as if it hurts obvious loss of vision, or confusion.Īnisocoria may be neurological or ocular and can result from any of the following: Cats’ eyes, so large and so lovely, can also signal injury or illness.Ĭonsider the condition called Anisocoria, where the pupil of one eye is larger than the pupil of the other eye.
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