How to Clean a Dog's Pink Eye (Conjunctivitis): A Step-by-Step Guide

Canine conjunctivitis (pink eye) is inflammation of the conjunctiva. Causes: bacterial, viral, allergic, foreign body, dry eye (KCS), trauma, eyelid abnormalities. Veterinary diagnosis is essential—treatment depends on etiology. Home cleaning is supportive only.

Supplies Needed

• Sterile saline solution (0.9% NaCl) or veterinary ophthalmic irrigating solution.
• Clean cotton balls, gauze pads, or soft lint-free cloths.
• Warm water (for compress).
• Prescribed medication (antibiotic drops/ointment, anti-inflammatory, cyclosporine/tacrolimus for KCS).
• Elizabethan collar (E-collar) to prevent rubbing.

Step-by-Step Cleaning

1. Wash hands thoroughly with soap and water.
2. Calm the dog: Gentle restraint; have helper if needed.
3. Warm compress (optional): Clean cloth soaked in warm water, wrung out, held on closed eye 30–60 sec to loosen crusts.
4. Clean from medial to lateral: Moisten cotton/gauze with saline. Gently wipe from inner canthus (near nose) outward. Use fresh piece for each wipe. Do not touch the eyeball directly.
5. Remove all discharge/crusts from lids and periocular hair.
6. Apply prescribed medication:
   • Drops: 1 drop into lower conjunctival sac (pull down lower lid).
   • Ointment: ¼–½ inch ribbon into sac.
   • Wait 5–10 min between multiple meds.
7. Prevent rubbing: E-collar on until resolved.
8. Repeat: 3–4 times daily, or as directed by vet.

When to Recheck Vet Immediately

• No improvement in 48 hours.
• Worsening: increased redness, swelling, pain, purulent discharge, corneal opacity, squinting, pupil changes.
• Systemic signs: lethargy, anorexia.

Important Notes

• Never use human eye drops (e.g., Visine, steroid drops) without vet approval.
• Do not share medications between pets.
• Complete full antibiotic course even if eye looks better.
• Underlying cause (KCS, entropion, distichia, ulcer) must be addressed to prevent recurrence.