Guinea Pig Eye Problems: Infections, Cataracts, and Corneal Injury

What Eye Problems Affect Guinea Pigs?

Guinea pigs commonly develop eye conditions including conjunctivitis (inflammation of the eye lining, often bacterial), corneal injuries from hay pokes or cage injuries, cataracts (especially in aged animals and diabetic guinea pigs), and "sticky eye" in young pups (a condition where the eyelids stick together shortly after birth). Foreign material — hay fragments and bedding — frequently enters guinea pig eyes and can cause significant irritation and corneal damage if not removed.

First 3 Steps to Take at Home

Examine the eye carefully with good lighting: Is the eye swollen, squinted, or held closed? Is there discharge (clear, yellow, or green)? Is there visible cloudiness on the surface of the eye or an object embedded in it? These findings determine urgency.
Flush with saline if a foreign body is suspected: Use sterile saline to gently flush the eye if you suspect hay or debris. Hold the guinea pig securely, tilt the head, and allow the saline to flow across the open eye. If the guinea pig is squinting severely, this may be difficult and a vet visit is more appropriate.
Keep the area clean: Wipe eye discharge away gently with a damp cotton pad. Use a separate pad for each eye to prevent cross-contamination. Do not apply any medication without veterinary guidance.

When to Go to the Vet Immediately

Eye kept permanently shut or squinting severely
Cloudiness on the eye surface (possible corneal ulcer)
Eye that appears larger than normal (possible glaucoma)
Any blood in or around the eye
Colored (yellow or green) discharge from the eye

Follow-Up Care Checklist

Apply eye drops or ointment precisely as prescribed — eye conditions respond best with consistent treatment timing
Recheck in 5–7 days to confirm the eye is healing
Ensure hay quality doesn't contribute to eye injury — dust-extracted hay reduces eye irritation

Track Eye Health with TailRounds

Photograph the affected eye daily and log discharge amount and squinting severity in the TailRounds Daily Log. Visual tracking helps confirm treatment is working.

Book a Vet Appointment

Any eye that is squinted, cloudy, or producing colored discharge needs prompt examination. Book at Happy Paws for eye assessment including fluorescein staining if needed.

Summary for Your Clinic Visit

Tell your vet which eye is affected, how long it's been present, what the discharge looks like, whether the guinea pig can open the eye, and any possible foreign body exposure.