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Prednisolone Acetate Ophthalmic for Veterinary Use

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by Barbara Forney, VMD

Overview


Therapeutic Class: 

Corticosteriod


Species: 

Dogs, Cats and Horses


May Be Prescribed by Vets for: I

nflammatory conditions of the conjunctiva, sclera, cornea, and anterior chamber

FDA Status: No FDA approved veterinary products

Basic Information

Prednisolone is a synthetic corticosteroid that may be used systemically or topically. This monograph discuses the ophthalmic use of prednisolone acetate. Topical corticosteroids are used to treat inflammatory processes of the sclera, conjunctiva, cornea and anterior chamber. Disorders of the posterior chamber and the eyelid are generally treated with systemic corticosteroids, as topical ophthalmic corticosteroids do not penetrate these structures adequately.

When choosing between ophthalmic corticosteroids, consideration should be given to relative potency, penetration, ease and frequency of application. Prednisolone acetate has approximately 4 times the anti-inflammatory potency of cortisone. Dexamethasone is a more potent corticosteroid than prednisolone acetate, but prednisolone acetate has superior penetration into the anterior chamber. Prednisolone acetate is a liquid suspension which may be administered directly or through a sub-palpebral catheter. 

Dogs and Cats

Prednisolone acetate is used in a wide variety of inflammatory conditions of the sclera and episclera, including scleritis, episcleritis, ocular nodular fascitis, nodular granulomatous episclerokeratitis, proliferative keratoconjunctivitis of collies, and fibrous histicytoma. Prednisolone acetate is used in non-ulcerative corneal disorders, including chronic superficial keratitis of dogs, and feline eosinophilic keratitis. It is the preferred corticosteriod for treatment of anterior uveitis in small animals due to the superior penetration in the anterior chamber when compared to dexamethasone.

Horses

Prednisolone acetate is used to treat anterior uveitis in the horse. Anterior uveitis or equine recurrent uveitis (ERU) is the most common cause of blindness in the horse. The goals for medical treatment of ERU are to reduce pain and inflammation and to preserve vision. ERU flares should be treated aggressively with topical ophthalmic corticosteroids and system non-steroidal anti-inflammatory medications. Prednisolone acetate is, in many instances, the corticosteroid of choice due to the excellent ocular penetration and the ability to use it with sub-palperbral catheter.
Prednisolone acetate is also used to treat non-ulcerative corneal inflammatory diseases in the horse, including immune mediated keratophathies (IMMK) and eosinophillic keratitis. In addition to treatment with topical corticosteroids, horses with eosinophillic keratitis should be dewormed two times with ivermection; 10 days apart. 

Side Effects

  • Prednisolone acetate and other topical ophthalmic corticosteroids are generally not used in the presence of corneal ulceration. There are exceptions to this rule, but only with very careful monitoring. 
  • Topical ophthalmic corticosteroids may allow for corneal fungal overgrowth.
  • Additional caution should be used with very small cats or dogs, as frequent topical application of corticosteroids may result in appreciable systemic absorption. Subconjunctival corticosteroids may also be absorbed systemically. Additional caution should be exercised in animal with pre-existing endocrine disease, or those that are immune-suppressed.
  • Prednisolone acetate and other corticosteroid ophthalmic preparations are not generally used to treat conjunctivitis in the cat. The most common conjunctival pathogen in cats is herpes virus.

Drug Interactions

  • Topical ophthalmic prednisolone acetate may be used with topical ophthalmic non-steroidal anti-inflammatory drugs.

Overdose

  • There are no specific precautions regarding overdose with topical ophthalmic corticosteroids. Very small cats or dogs will be more susceptible to overdose.

About the Author

Dr. Barbara Forney is a veterinary practitioner in Chester County, Pennsylvania. She has a master's degree in animal science from the University of Delaware and graduated from the University of Pennsylvania School of Veterinary Medicine in 1982.

She began to develop her interest in client education and medical writing in 1997. Recent publications include portions of The Pill Book Guide to Medication for Your Dog and Cat, and most recently Understanding Equine Medications published by the Bloodhorse.

Dr. Forney is an FEI veterinarian and an active member of the AAEP, AVMA, and AMWA.

www.exclusivelyequine.com

The information contained on this site is general in nature and is intended for use as an informational aid. It does not cover all possible uses, actions, precautions, side effects, or interactions of the products shown, nor is the information intended as medical advice or diagnosis for individual health problems or for making an evaluation as to the risks and benefits of using a particular product. You should consult your doctor about diagnosis and treatment of any health problems. Information and statements have not been evaluated by the Food and Drug Administration ("FDA"), nor has the FDA approved the products to diagnose, cure or prevent disease. 

Wedgewood Pharmacy's compounded veterinary preparations are not intended for use in food and food-producing animals.
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