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Date:   24 August, 2010  
Focus: Small animals - dogs, cats, hamsters, guinea pigs & rabbits
 
Shih Tzu's eye corneal ulcerations and injuries - what is a Descemetocoele?
Dr Sing Kong Yuen, BVMS (Glasgow), MRCVS
First written: 5 June, 2009
Updated:
24 August, 2010
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Be Kind To Pets
Veterinary Education
Project 2010-0129
Treat a corneal ulcer within 24 hours as it is a veterinary emergency
A corneal ulcer is painful and animals with ulcers often squint their eyes. It is wise to consult your veterinarian immediately as the ulcer may be a deep one or an infected one. When the animal continues to rub its eye, the corneal ulcer ruptures and the gelatinous aqueous or vitreous substance comes out. 

The eyeball collapses and the animal will have lost it vision. When this happens, there is very little the doctor can do except to cut out the eyeball.  If the bacteria goes into the aqueous and the vitreous, the eyeball becomes infected and is very painful. This infected eyeball may need to be removed by surgery too.  Hence, it is always important to treat eye injuries as an emergency and consult your veterinarian. 

In the case below, there is a deep corneal ulcer. This was a Descemetocoele but the dog kept rubbing till there was bleeding in the iris and blood and aqueous leaked out from the anterior chamber.

Eye injuries are emergencies. Treatment by your vet in <24 hours will be best for your dog but many Singapore Shih Tzu dog owners procrastinate for several days before seeking treatment.

See also:
Medial entropion and nasal fold surgery in a Shih Tzu  
Traumatic ulcerative keratitis in the Shih Tzu  
Left Eye Descemetocoele. Shih Tzu, 7 years. Toa Payoh Vets Left Eye Descemetocoele. Shih Tzu, 7 years. Toa Payoh Vets
Blood comes out from the inside of the eye, as there is bleeding in the anterior chamber Under general anaesthesia, the ulcer is very deep with the Descemet Membrane broken. Therefore this case is not a Descemetocoele
Left Eye Descemetocoele & Ulcers. Shih Tzu, 7 years. Singapore. Toa Payoh Vets Left Eye Descemetocoele & Ulcers. Shih Tzu, 7 years. Singapore. Toa Payoh Vets
tarsorrhaphy - eyelids sewn together. Stitches will be removed in 10 - 14 days. Ulcer will heal but not 100% depending on nursing care and extent of the ulceration Descemetocoele - a deep corneal ulcer in which the Descemet Membrane bulges out of the eye. In this case, the integrity of the Descemet Membrane had been breached and is no longer a Descemetocoele

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