Can keratoconjunctivitis sicca cause permanent vision loss?

If left untreated for a prolonged period, repeated corneal damage may affect vision. However, early treatment and regular monitoring can reduce the risk of permanent damage — consult your vet for personalised guidance.

Can I use artificial tears to help at home?

Artificial tears or moisturising gel can temporarily relieve dryness and irritation, but whether they are appropriate and how frequently to use them should be assessed by your vet — follow their advice.

What tests will the vet perform to determine the cause?

Common tests include slit-lamp examination, corneal staining, discharge cytology, and blood tests. Imaging studies or referral to a specialist may be arranged if necessary.

Is a follow-up visit still needed once symptoms improve?

Yes. Even when symptoms improve, follow-up visits confirm corneal healing and tear film stability, and allow adjustment of ongoing care and medication — attend as recommended by your vet.

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

Keratoconjunctivitis Sicca (Dry Eye) in Dogs & Cats: Symptoms, Diagnosis & Treatment [2025]

Keratoconjunctivitis sicca (dry eye) is inflammation of the cornea and conjunctiva caused by insufficient tear production. It is common in brachycephalic dog breeds. Lifelong use of immunosuppressive eye drops (such as cyclosporine) can effectively control the condition.

Take 1 minute to check the symptoms first

Last updated: 2025/12/16

Pethealthmap Editorial Team

Sources: AAHA, AVMA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Sudden complete inability to see or total loss of vision
•Severe eye bleeding or visible corneal rupture
•Obvious eyeball protrusion or persistent inability to open the eye

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

•Continuous heavy white or mucoid discharge
•Frequent blinking or prolonged squinting
•Cornea appears cloudy or reduced activity in bright light

01What Symptoms Indicate a Problem?

Keratoconjunctivitis sicca typically presents as inadequate tear production and reduced ocular surface protection, resulting in dry eyes, increased discharge, and changes in vision.

Dry eyes, frequent blinking, or prolonged squinting
Increased white or sticky discharge, with frequent crusting around the eye
Cloudiness, ulceration, or opacity of the cornea or conjunctiva
Sensitivity to light, pawing at the eye, or clearly avoiding being touched near the eye
If symptoms continue to worsen, arrange a veterinary consultation as soon as possible

Seek emergency care immediately if you notice the following symptoms:

⚠️ Sudden complete loss of vision or inability to detect nearby objects
⚠️ Severe eye bleeding or visible corneal damage
⚠️ Obvious eye protrusion or persistent inability to open the eye

02How to Assess the Situation at Home? Key Observations and When to Seek Emergency Care

Recording photos and symptom progression at home can speed up diagnosis — document the onset time and related observations as accurately as possible.

Record when symptoms first appeared and how they have changed over time
Take clear close-up photos of the eye and any discharge for reference
Film your pet's blinking frequency, light-avoidance, or eye-rubbing behaviour for the vet
Observe and note any changes in alertness, appetite, or water intake
Weigh your pet and check whether urination and defecation are normal to help assess overall health
It is recommended to bring this information to a clinic with ophthalmology experience or a specialist practice

03How Will the Vet Diagnose the Condition? Common Tests

A comprehensive ophthalmic examination is the priority on arrival; imaging and laboratory tests may be added as needed to assess systemic factors.

Physical ophthalmic examination, including slit-lamp assessment of the cornea and conjunctiva

Cytology (smear) of ocular discharge to check for signs of infection

Corneal staining to evaluate the extent of surface damage and ulceration

Ultrasound or CT imaging as needed to rule out deeper pathology

Blood, biochemistry, and urinalysis to assess possible systemic causes

04How to Treat and Care After Diagnosis? Medications, Adjustments, and Home Care Guide

Treatment aims to restore the tear film, reduce inflammation, and prevent infection, with regular monitoring of corneal and tear film improvement.

The vet may prescribe topical medications to control inflammation and prevent infection
Artificial tears or moisturising gel can be used as a supportive home-care measure
Any underlying systemic disease should be managed concurrently and adjusted according to veterinary advice
Schedule regular follow-up visits as directed to monitor the cornea and tear film
If symptoms do not improve or recur, referral to a veterinary ophthalmologist is recommended

05What to Prepare Before the Vet Visit? Key Information to Help the Vet Identify the Cause Quickly

Bring clear eye photos and symptom videos for the vet's reference

Note the date symptoms began, how they have changed, and whether they are worsening

Describe the colour, volume, frequency, and any change in smell of the discharge

Observe and record your pet's reaction when touched around the eye (e.g., flinching or signs of pain)

List all current medications, supplements, and any history of chronic illness

It is advisable to book in advance at a clinic with ophthalmic equipment or ophthalmology experience

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.

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