Corneal Ulcers in Dogs and Cats: Symptoms, Risks, Treatment Options, and ECM Repair Materials

1. What is a corneal ulcer?
A corneal ulcer is one of the most common eye problems in dogs and cats. In simple terms, it is a wound or defect on the cornea, the clear front surface of the eye. A superficial ulcer mainly affects the epithelial layer. A severe ulcer may extend into the stroma and may progress to descemetocele, corneal perforation, or exposure of internal eye structures.
A corneal ulcer should not be treated as a simple scratch. The cornea is transparent, avascular, and structurally delicate. Delayed treatment may lead to infection, melting, scarring, vision loss, or blindness.
2. Why do dogs and cats develop corneal ulcers?
Corneal ulcers in dogs and cats have many causes, including trauma, eyelid and eyelash abnormalities, tear film problems, dry eye, infection, and breed-related risks. Feline herpesvirus is a common concern in cats, while bacterial infection may complicate ulcers in both dogs and cats.
Brachycephalic dogs such as French Bulldogs, Pugs, and Shih Tzus may have prominent eyes, incomplete eyelid closure, tear film problems, or altered corneal sensitivity. These factors can increase injury risk and delay detection.
3. What are the signs of corneal ulcers?
Common signs include squinting, tearing, light sensitivity, frequent blinking, eye rubbing, increased discharge, conjunctival redness, and a cloudy or white area on the cornea. Veterinarians usually evaluate corneal ulcers with an eye examination, fluorescein staining, slit-lamp assessment, and other tests when needed.
4. Why distinguish superficial, deep, and melting ulcers?
Treatment depends on severity. A superficial ulcer and a deep ulcer may both look like eye discomfort to a pet owner, but their risks are very different. A superficial ulcer usually affects the epithelial layer. A deep corneal ulcer extends into the stromal layer. The cornea becomes thinner and structural risk increases.
A melting ulcer, also known as keratomalacia, may progress rapidly. Inflammation, infection, and enzymatic degradation can cause the corneal stroma to soften and thin. Without prompt treatment, perforation may occur.
5. What are common treatment approaches?
Corneal ulcer treatment is rarely based on one product alone. It depends on the cause, depth, and risk level. Common foundational care may include topical antimicrobials, lubrication, ocular surface protection, pain control, an Elizabethan collar to prevent rubbing, treatment of dry eye or eyelid problems, and regular rechecks.
If an ulcer fails to heal, becomes deep, begins melting, approaches perforation, or has already become structurally risky, referral to a veterinary ophthalmologist or surgical repair may be recommended.
6. How can ECM materials support corneal ulcer repair?
The value of ECM materials is that they provide both support and a favorable repair environment. Vetrix BioSIS corneal patch is derived from porcine small intestinal submucosa (SIS), a decellularized biological scaffold. According to the product material, it can be used for corneal tissue repair, corneal lacerations, and corneal ulcer repair.
Vetrix EyeQ amniotic membrane patch is derived from decellularized bovine amniotic membrane tissue. It contains healing-related growth factors and anti-inflammatory components. It is more focused on corneal surface repair, epithelial healing, and inflammatory modulation. EyeQ liquid amniotic membrane patch is a micronized amniotic membrane liquid product for corneal ulcer treatment in dogs, cats, horses, rabbits, birds, and small mammals.
7. Takeaway
Corneal ulcers in dogs and cats are common but should never be underestimated. Superficial ulcers require timely infection control, ocular surface protection, and epithelial healing support. Deep or melting ulcers may require surgery and structural repair materials.
ECM and amniotic membrane products provide new repair-support options in veterinary ophthalmology. BioSIS corneal patch focuses on structural support. EyeQ amniotic membrane patch focuses on healing and anti-inflammatory support. EyeQ liquid amniotic membrane patch offers a non-surgical and easy-to-apply option for ocular surface repair support.
References / 参考资料
Merck Veterinary Manual, Disorders of the Cornea in Dogs: https://www.merckvetmanual.com/dog-owners/eye-disorders-of-dogs/disorders-of-the-cornea-in-dogs
Merck Veterinary Manual, The Cornea in Animals: https://www.merckvetmanual.com/eye-diseases-and-disorders/ophthalmology/the-cornea-in-animals
PubMed, Effects of commercial amniotic membrane extract on the re-epithelialization time and the early expression of MMP-9 in cats with experimentally induced corneal ulcers: https://pubmed.ncbi.nlm.nih.gov/36094319/
Product material provided by BeneMount: Vetrix BioSIS, Vetrix EyeQ, EyeQ liquid amniotic membrane patch.