Guinea Pig Eye Infection: Symptoms, Causes, and Treatment
A guinea pig with red, watery, or discharge-filled eyes is showing a sign that needs prompt attention. Eye problems in guinea pigs can escalate quickly — mild redness can progress to serious infection if not treated.
Common Causes
Bacterial Conjunctivitis
The most frequent cause. Chlamydia caviae is the primary bacterial culprit, though Streptococcus, Bordetella, Pasteurella, and Staphylococcus can also be involved. The infection causes inflammation of the conjunctiva — the tissue lining the eyelids and covering the white of the eye.
Vitamin C Deficiency
Guinea pigs cannot synthesize vitamin C. Deficiency can cause eye discharge and swelling. If their diet is low in fresh vegetables, vitamin C should be investigated.
Respiratory Disease Connection
Upper respiratory infections often affect the eyes simultaneously. If your guinea pig has discharge from both nose and eyes, respiratory infection must be ruled out urgently.
Dust and Irritants
Fine bedding dust, cleaning product residues, or hay dust can irritate the eyes.
Symptoms
- Redness of the whites of the eye or eyelid lining
- Discharge — clear, yellow, or green
- Swollen or crusty eyelids — eyelids may stick together in the morning
- Squinting or keeping the eye closed
- Pawing at the eye
- Photosensitivity — avoiding bright light
When to Worry
See an exotic vet within 24 hours if your guinea pig:
- Has one or both eyes swollen shut
- Has thick yellow or green discharge
- Has any cloudiness on the eye surface
- Has stopped eating or is lethargic alongside eye symptoms
- Shows respiratory symptoms alongside the eye issue
Treatment
Typically topical antibiotic eye drops or ointment (tetracycline ophthalmic preparations for Chlamydia). Oral medications may be added. Vitamin C supplementation is often recommended. Most uncomplicated cases resolve in 1–2 weeks.
Do not use over-the-counter human eye drops without veterinary guidance.
How Voyage Can Help
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This article is for informational purposes only and is not a substitute for professional veterinary advice. For exotic pets, always consult a vet with exotic animal experience.