44/ THE RIDER SEPTEMBER 2010
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WHAT’S UP DOC From the desks of Dr’s Armstrong & Frost.
HALTON EQUINE VETERINARY SERVICES
Question: Dear Doctors;
I am looking into buying a horse with Moon blind- ness. Can you explain what it is and does this mean he can not see at night??? Many thanks in advance
Totally confused possible horse owner Answer:
Moon Blindness in Horses What is it?
-inflammation of the front chamber of the eye, also known as periodic ophthalmia and uveitis, typically signs of the disease include squinting and tearing of the eye, it is a painful condition that can result in a cloudy appearance to the eye hence the term “moon blindness” What horses does it effect?
-it can effect any breed of horse but certain breeds seem
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to be more predisposed such as the Appaloosa and Warmbloods How is it acquired/etiology?
-there are many possible causes including-a genetic predisposition, infection with leptospirosis (bacteria), concurrent trauma to the eye such as a corneal ulcer, autoimmune disease
How is it treated?
-the primary drug of choice for moon blindness is a topical steroid but it is critical to rule out any corneal trauma such as an ulcer of the eye because this drug can make the condition worse in the presence of a corneal ulcer, other treatments include medication to dilate the pupil, antibiotics and pain medication given either topically (applied to the eye) or systemically (oral, intramuscular or intravenous), treatments are often given as frequently as 4 times a day or even more frequent, in horses that are refractory to having eye medications placed in their eyes-a subpalpebral lavage system can be placed by the veterinarian to facilitate treatment
What are the consequences/prognosis?
-repeated episodes of this condition can lead to cataracts and eventual blindness, although it often seems to effect only one eye at a time it often eventually effects both eyes, if a horse tests positive for the lep- tospirosis titre (based on a blood test) this increases the risk of develop- ing uveitis
How is this disease prevented?
-the risk of developing this disease can be reduced by monitoring the eyes on a regular basis for signs of irritation such as squinting or dis- charge,if these signs are observed you should consult your veterinarian promptly, reducing the risk of trauma to the eye such as implementing safer methods of hanging feed and water buckets in the stall (turn any snaps to face away from the horse etc), selecting horses for breeding that have not developed this disease from inheritance
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Central Ontario Pony Club Members Shine at National Dressage Championships
The Central Ontario Region’s six young riders all did well at the national dressage championships held August 13-15 in Kelowna, British Columbia. They are: · Meg Scott of the Victoria Pony Club, at the Starter level – first in Test 1, third in Test 2, first at the written test, third overall
· Jenna Crone of the Rising Star Pony Club, at the Pre-Training level – third in Test 1, fourth in Test 2, sixth overall
· Ali Sprague of the Kawartha Pony Club, at the Training level – third in Test 4, fourth in the written test, fourth overall
· Meaghan Lloyd of the Durham Pony Club, at First Level – tied for fourth in Test 3, fourth in the mys-
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Leaders in Saddlery Solutions tery test, ninth overall
· Johanna McKeen, at the Second Level in the Affiliate Members group (Affiliate Members are 21- 25 years old as of January 1, and compete only against each other, not against the younger riders) – first in Test 3, second in Test 4, third in the mystery test, second in the written test, third overall · Carolyn Russell-Poliquin, at the Third Level – first in the FEI Indi- vidual test, second in the Prelimi- nary test, second in the mystery test, second in the written test, sec- ond overall.
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The event comprised two technical tests, a mystery test, a written test and a turnout score. The competitors rode two different horses for each of the tech- nical tests and used one of them for their mystery test. As shipping horses around the country is impractical at this level of competition, all entries rode borrowed horses, supplied by the host British Columbia Interior/Northern Region. The competitors who qualify for this competition are determined individually by each region but typically are champion at a regional dressage competition or related competitions with a minimum percentage of 58% in their technical tests. For more information, get in touch with Bob Inglis, Central Ontario Region Communications Chair, at 416-493-1223 (office) or 416-491-4230 (home) or via e-mail at bobinglis@
technalysis.on.ca. For more information visit website at
www.canadian-
ponyclub.org/ and follow the appropriate links.
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