Dry eye (KCS) in dogs
Dry eye (keratoconjunctivitis sicca) means the eyes don't make enough tears. It's often caused by the immune system attacking the tear glands.
Last updated: October 2026 · 2 sources · see sources
Signs to watch for
- Thick, sticky discharge
- Red eyes
- Dull-looking cornea
- Squinting
- Repeat eye infections
Trouble breathing, collapse, repeated vomiting, not peeing, or a seizure that lasts more than a few minutes needs a vet right away. See when to see a vet.
How vets diagnose it
A Schirmer tear test measures tear production in a few minutes. [2]
How it's treated
Lifelong eye medicine like cyclosporine or tacrolimus helps the glands make tears, along with artificial tears. [2]
Medicines your vet may mention: Optimmune (Cyclosporine eye ointment), Tacrolimus. We don't list doses; your vet will decide what fits your pet.
What it costs to diagnose and manage
| Item | Typical US price | Src |
|---|---|---|
| Schirmer tear test, national average (CareCredit) | $57 | [1] |
| Routine eye exam, national average (CareCredit) | $130 | [1] |
These are typical US ranges from the sources listed. Your pet's costs depend on how severe things are, the tests your vet recommends, your pet's size and where you live. Ask your vet for a written estimate.
Outlook
Most dogs do well with daily treatment. [2]
Common questions
What is dry eye (KCS) in dogs?
Dry eye (keratoconjunctivitis sicca) means the eyes don't make enough tears. It's often caused by the immune system attacking the tear glands.
What are the signs of dry eye (KCS)?
Common signs include: thick, sticky discharge, red eyes, dull-looking cornea, squinting, repeat eye infections.
How do vets diagnose dry eye (KCS)?
A Schirmer tear test measures tear production in a few minutes.
How is dry eye (KCS) treated?
Lifelong eye medicine like cyclosporine or tacrolimus helps the glands make tears, along with artificial tears.
How much does dry eye (KCS) cost to treat?
Schirmer tear test, national average (CareCredit): $57; Routine eye exam, national average (CareCredit): $130. Costs vary with severity, tests, your pet's size and where you live.
Related
This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.