What are the common causes of non-ulcerative keratitis?

It is often caused by ocular dryness, chronic irritation, allergies, or immune-mediated reactions. The exact cause must be confirmed by your vet through corneal examination and testing, with treatment planned accordingly.

How can I temporarily care for the eye at home to prevent worsening?

Gently wipe discharge around the eye with clean gauze, prevent your pet from scratching the eye, and photograph any changes. Seek veterinary advice promptly if needed.

Are there risks to using corticosteroid eye drops?

Corticosteroids can reduce inflammation, but may be contraindicated if corneal damage or infection is present. Always have your vet examine the eye before starting treatment and follow their instructions.

Can vision usually be restored after treatment?

Vision recovery depends on the extent of corneal damage and how long the condition has been present. Mild oedema often improves, while severe or chronic lesions may recover more slowly — follow your vet's guidance and attend regular rechecks.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Non-Ulcerative Keratitis in Dogs & Cats: Symptoms, Diagnosis & Care Guide [2025]

Non-ulcerative keratitis encompasses several types of corneal inflammation, including pannus, pigmentary keratitis, and dry eye-related disease. Treatment depends on the underlying cause and may include immunosuppressants, artificial tears, or surgery.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

PetHealthMap Editorial Team

Sources: ACVO, AAHA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Sudden complete vision loss or unresponsive eyes
•Obvious eye enlargement, protrusion, or deformity
•Heavy bloody or dark-colored eye discharge

Schedule a Clinic Visit Soon (within 24–72 hours)

•Noticeably worsening or blurred vision lasting more than one day
•Persistent purulent or thick sticky eye discharge
•Repeated pawing at the eye or excessive blinking

01What symptoms signal a problem?

Non-ulcerative keratitis causes inflammation and discomfort on the corneal surface, with common signs including changes in vision and ocular discharge.

Blurred vision or sudden loss of clarity, with reduced responsiveness
Corneal oedema causing a cloudy or whitish appearance on the eye surface
Persistent thick or purulent discharge from the eye
Repeated blinking, pawing at the eye, or flinching when touched near the eye
Redness of the conjunctiva, swelling around the eye, or obvious discomfort

Seek emergency care immediately if you notice the following symptoms:

⚠️ Sudden complete loss of vision or an unresponsive eye
⚠️ Obvious enlargement, protrusion, or deformity of the eyeball
⚠️ Heavy bloody or dark-coloured discharge from the eye

02How to assess signs at home: key observations and when to seek emergency care

Observing and recording key information at home helps your vet quickly assess the condition and plan appropriate tests.

Record when symptoms first appeared and how they have changed over time
Take close-up photos and short videos of the eye, including blinking and side angles
Note any changes in appetite, alertness, or activity level
Log water intake and bathroom habits for your vet's reference
If symptoms worsen or emergency signs appear, seek veterinary care immediately

03How will the vet make a diagnosis? Common examination steps

Your vet will perform a thorough ophthalmic evaluation and may order cytological or microbiological tests to identify the source of inflammation or infection.

Complete ophthalmic physical examination and visual function assessment

Corneal and conjunctival surface scraping for cytological examination

Bacterial culture or PCR testing when indicated

Imaging or biopsy evaluation for complex or deep lesions

Blood work arranged prior to surgery or when systemic disease is suspected

04How is it treated and managed after diagnosis? Medications, diet, and care guide

Treatment involves medication and any necessary local procedures, with regular follow-up visits to adjust the regimen and monitor for side effects.

Antibiotic, anti-inflammatory, or other medications selected based on examination findings
If surgery or local intervention is needed, your vet will explain the risks and expected outcome
Close monitoring of corneal status is required when corticosteroids are used
Improve the environment and diet to reduce irritants and triggering factors
Clean eye discharge at home, prevent your pet from scratching the eye, and attend regular check-ups

05What to prepare before the vet visit: key steps to help your vet diagnose quickly

Prepare a record of when symptoms began and how they have progressed

Bring photos and short videos of the eye for the vet's reference

List all current medications, eye drops, and supplements

Describe your observations of appetite, bathroom habits, and daily activity

If examined at another clinic previously, bring any past reports or imaging

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.