Yellow eye discharge most often indicates bacterial infection. It tends to be thicker and more adherent than clear mucus.
Common Sources
Acute bacterial conjunctivitis produces yellow, sticky pus that can seal the lids. More serious infections such as corneal ulcers, dacryocystitis, and orbital cellulitis also generate yellow discharge alongside pain, swelling, and reduced vision.
- Contact lens misuse is a major risk factor for ulcer-related yellow discharge
- Newborns with yellow discharge may have serious conjunctival infections
- Systemic conditions affecting immunity increase infection risk
- Mixed infections can show yellow discharge on top of viral redness
Clinical Care
Prompt diagnosis and appropriate antibiotics are important to prevent complications. Swabs may be taken in severe or non‑responsive cases.
- Do not use leftover or borrowed antibiotic drops
- Cease contact lens wear until cleared by a clinician
- Urgent assessment is required if yellow discharge is accompanied by significant pain or vision loss
- Good hygiene limits spread to family or colleagues
