Why Is My Pet’s Eye Red?

Common Causes in Dogs and Cats

If your dog or cat has a red, irritated eye, it’s more than just an unsightly annoyance—it’s a signal that something’s not right. At Two Rivers Vet Hospital in Fargo, ND, red eyes are one of the most common eye problems in pets we evaluate. Redness can result from a wide range of causes, and early diagnosis is key to preventing long-term damage to your pet’s vision and comfort.

Here are a few of the most common reasons we see red eyes in our canine and feline patients:

1. Corneal Abrasions
Scratches on the surface of the eye are painful and can occur after rough play, a run through the bushes, or even rubbing the eye on the carpet. These are usually diagnosed with a fluorescein stain test and treated with medicated drops or ointment.

2. Inadequate Tear Production (Dry Eye)
Also called keratoconjunctivitis sicca (KCS), dry eye is more common in certain breeds and can lead to chronic irritation and thick, sticky discharge. We diagnose this with a tear test and often manage it with daily eye medications.

3. Glaucoma
This serious condition occurs when pressure inside the eye builds up, causing pain, redness, and possible vision loss. It’s an emergency and needs immediate attention to preserve eye health.

Other causes may include allergies, conjunctivitis, or eyelid issues. If your pet’s eye is red, squinting, watery, or showing any sudden changes, give us a call. Early intervention can make a big difference.

Watch this week’s posts for more detailed info on common eye conditions we treat right here in Fargo.