MAGAZINE

Senior Dog Red Eyes and Tearing

Clean Gently, Then Find the Cause

2 min read · editor-reviewed

KennelLab

Educational care notes from KennelLab editors — not a veterinary diagnosis.

By Jordan EllisPublished Oct 30, 2026 · Updated Oct 30, 2026

Quick answer
You can gently clean discharge from the fur around the eyes with warm water or sterile saline, but wiping does not treat the cause. Recurring redness, thick discharge, squinting, cloudiness, or sudden vision changes need a same-day or prompt vet visit. Skip human “get-the-red-out” drops and leftover steroid eye meds unless your vet directs them.

Skim the quick answer, then use the sections below — or jump with the contents menu when you already know what you need.

This site is reader-supported. We may earn a commission when you buy through links on this page.

Cloudy is not the same as red and watery

Many older dogs develop bluish-gray lens haze called nuclear sclerosis. It is age-related, usually does not wreck vision alone, and does not explain ongoing redness and tearing. Cataracts or corneal disease can also look cloudy. New redness, tearing, or squinting deserve a fresh exam even with prior sclerosis.

When home wiping is not enough

Call the clinic the same day for frequent squinting, light sensitivity, pawing or face-rubbing, sudden or worse redness, thick yellow-green discharge, or one eye looking very different. Sudden blindness, a bulging eye, rapid clouding, severe pain, or trauma need immediate care—corneal injury and acute glaucoma can threaten sight fast.

How to clean corners safely

Goal: clear crust from skin and fur—not scrub the eyeball. Wash hands; use soft gauze with warm water or sterile saline. Soften dried crust first; never pick. Fresh surface each wipe; separate pads per eye; blot without pressing the globe. Stop if she resists or seems painful.

Do not brew saline or use contact-lens solution, alcohol, or disinfectants. No discharge? Skip “preventive” wiping. If it refills fast, the cause remains.

Cut irritation

Smoke, dust, sprays, and face-directed airflow aggravate eyes. No heads out car windows. Long periocular hair belongs with a groomer or vet. An Elizabethan collar while waiting can stop self-trauma.

Common causes

Dry eye (KCS)

Redness, sticky discharge, blinking; severe cases damage the cornea. Wet cheeks do not prove tear volume. Many middle-aged dogs need ongoing meds and rechecks.

Conjunctivitis and corneal injury

Can stem from irritants, allergy, poor tear film, or lid issues. Relapse often means the trigger remains. Squinting and rubbing are ulcer clues—never restart old steroid drops before an ulcer is ruled out.

Glaucoma

Pressure spikes bring redness, pain, clouding, and vision loss. Do not wait for an enlarged globe—pressure must be measured.

Human eye drops?

Do not self-prescribe. Avoid red-out whiteners, steroid drops, old leftovers, and another pet’s meds. Bring any bottle you used to the clinic. Supplements do not replace diagnosis.