Eye discharge can be watery, mucoid, or purulent and reflects underlying irritation or infection. Its character helps distinguish likely causes.
Typical Causes
Viral conjunctivitis often produces watery or stringy discharge with redness and grittiness. Bacterial infections cause thicker yellow or green pus, while allergic conjunctivitis leads to itchy, watery eyes with minimal crusting.
- Blocked tear ducts in infants or adults may cause persistent mucous discharge
- Blepharitis and meibomian gland dysfunction can create oily or flaky debris on the lashes
- Contact lens‑related infection is a serious cause of purulent discharge with pain
- Some systemic infections manifest with eye discharge as part of wider illness
Clinical Points
Assessment considers duration, associated pain, vision changes, and exposure history. Treatment ranges from hygiene and lubricants to targeted antimicrobial or anti‑allergy therapy.
- Severe pain, light sensitivity, or reduced vision with discharge requires urgent review
- Avoid sharing towels or cosmetics during infectious episodes
- Contact lens wearers should stop lens use until cleared by a professional
- Chronic discharge may need investigation of lid margins and tear drainage
