Swollen Cat Eyelid: Home Care & Veterinary Red Flags

Unilateral eyelid swelling in cats: common causes include trauma, insect bite, allergic reaction, conjunctivitis, corneal ulcer, blocked tear duct, abscess, or neoplasia.

Immediate Home Care (First 24 Hours)

1. Isolate: Quiet, dim room; reduce stress.
2. Cold Compress: Clean cloth + ice pack (wrapped) 5–10 min q4–6h. Reduces inflammation.
3. Clean Discharge: Warm saline (1 tsp salt/cup water) on cotton ball; wipe medial → lateral. Separate cloth per eye.
4. Lubricate: Artificial tears (preservative-free) q4–6h if eye dry.
5. Prevent Trauma: E-collar if pawing/rubbing.
6. NO Human Meds: Aspirin, ibuprofen, Tylenol, Visine — TOXIC to cats.

Veterinary Red Flags (Go Now)

• Swelling not improved/worsened at 24h.
• Squinting, photophobia, third eyelid protrusion.
• Corneal cloudiness, ulcer (fluorescein stain +).
• Purulent discharge, crusting.
• Systemic signs: lethargy, anorexia, fever, hiding.
• Known trauma (fall, fight, hit).

Diagnostics

• Ophthalmic exam (slit lamp, tonometry, fluorescein, fundus).
• Cytology/culture of discharge.
• Blood work (FIV/FeLV, systemic).
• Imaging (US, CT) if mass suspected.

Eye issues escalate fast; early vet visit saves vision.