Acute Blindness in Cats

For simplicity lesions typically occur in one of three zones along this complex pathway. Presenting clinical signs were most often mydriasis and acute blindness.

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Ureteral or urethral obstruction ie the cat cannot urinate.

. Acute sudden blindness occurs when vision is lost in both eyes simultaneously. All of these potential causes of sudden blindness can be treated except the last cause. Kern says the most common is inflammation of the uvea uveitis the middle area of the eye that is made up of the iris the ciliary body which produces the fluid inside the eye and the choroid which supplies nutrients to.

In cats retinal detachment is commonly due to elevated blood pressure also known as hypertension. In a study 36 retrospectively evaluating cats diagnosed with acute blindness after enrofloxacin administration clinical signs of marked retinal degeneration were reported to develop within a few days of drug administration. A wide variety of conditions can precipitate sudden blindness in a cat including a burst of bleeding into the eyes interior or a traumatic blow to the head.

High blood pressure hypertension is frequently associated with a loss of vision and is one of the more common causes. High blood pressure hypertension is common in cats and if it is severe it can lead to retinal detachment which would lead to acute blindnessthis. Among the diseases that frequently lead to feline blindness Dr.

Thats because in people and felines there arent any obvious symptoms and you cant tell if your cat suffers from it unless you take his blood pressure regularly. Retinal detachment may have no symptoms other than sudden blindness although you may notice that your pets pupils stay dilated or enlarged. This article reviews specific prechiasm retina and optic nerve and cerebral cortical diseases that lead to acute blindness.

Acute blindness in a pet is distressing for both the animal and the owner. Cats are typically irreversibly blind though there are sporadic reports of some vision restoration or retention. Thyroid problems can cause high blood pressure and high glucose in the blood so sudden blindness can occur in cats with thyroid hormones in excess hyperthyroidism.

This list includes hypertension diabetes thyroid problems as well as kidney problems. The primary indicator of kidney disease in cats is dilute urine. If she has a taurine deficiency in her diet the result can be a degeneration of her retinas causing sight problems and leading to blindness.

A complete history is critical because ivermectin can cause retinal toxicity as well as central blindness in dogs and cats and enrofloxacin can cause acute retinal degeneration in cats. Four cats 23 without. Some of the more common causes include.

There are numerous causes of ARF. Bleeding in the gut or stomach. Two cats 10 were lost to follow up while still blind.

Fortunately in many cases vision can be restored. However veterinarians and pet owners should bear in mind that acute blindness can be and often is a manifestation of systemic disease. Blindness is the loss of vision in both eyes.

Retinal lesions include dysplasia and degeneration syndromes druginduced and taurinedeficient retinopathies and retinal detachment. Blindness more commonly happens in older cats from two different pathological processes. Taurine is an amino acid that is vital to keeping your feline friends eyes at peak health.

Certain diseases within the brain or nerves can cause sudden blindness. Kidney or Heart Disease Kidney or heart disease may cause hypertension or high blood pressure and this will lead to sudden blindness. The retina the optic nerve or the visual cortex.

Diagnosing Kidney Disease in Cats. You can reverse those effects by ensuring she gets foods with sufficient taurine. Itchy skin due to calcium and phosphorus deposition in the skin.

What causes acute renal failure. The veterinarian will frequently find enlarged and painful kidneys during the physical examination. Many cats are in shock by the time they reach the veterinary hospital.

Acute blindness may be transient or permanent. Fourteen of 20 cats 70 had documented recovery of vision whereas four 20 remained blind. Two cats 10 were lost to follow up while still blind.

Abnormalities may occur at any point within the complex vision pathway from retina to optic nerve to the visual center in the occipital lobe. For acute vision loss a thorough neuro-ophthalmic examination that assesses the menace response dazzle and palpebral reflexes and pupillary light reflexes PLRs is critical. In cats vision loss may arise from disorders of the structures that receive and process the image within the eye or from disorders of the visual pathways that transmit and further process the image within the brain.

Less common symptoms include. Sudden blindness in cats has a very short list of potential causes. Hypertension or high blood pressure often is called the silent killer.

Sudden loss of vision is an ophthalmic emergency with numerous possible causes. Fourteen of 20 cats 70 had documented recovery of vision whereas four 20 remained blind. Four cats 23 without.

Therefore all patients that present with blindnesseven those that do not. In this case the medication is Baytril and it is a common medication used. Ten of 17 cats 59 with neurological deficits had full recovery from neurological disease two 12 had mild persistent deficits and one 6 was euthanased as it failed to recover.

In rare cases a cats ingestion of an antibacterial medication called enrofloxacin has also been shown to damage the feline retina and cause sudden blindness. Optic neuritis or inflammation of the optic nerve is relatively uncommon in cats but does occur and is associated with. Not only can hypertension cause temporary blindness due to retinal hemorrhaging but its often a sign of kidney disease hyperthyroidism or feline diabetes.

All cats had diffuse retinal degeneration as evidenced by increased tapetal. Retinal degeneration can also cause blindness and. Ten of 17 cats 59 with neurological deficits had full recovery from neurological disease two 12 had mild persistent deficits and one 6 was euthanased as it failed to recover.

Reaction to a medication.

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