Anterior Segment
Ocular Surface Squamous Neoplasia
Also known as: OSSN, conjunctival intraepithelial neoplasia, CIN, squamous cell carcinoma conjunctiva, SCC conjunctiva, corneal intraepithelial neoplasia, limbal mass, conjunctival tumour
Clinical decision support only
OptoGuide™ supports professional judgement and does not diagnose or replace clinician responsibility.
Overview
A spectrum of epithelial neoplasia of the conjunctiva and cornea ranging from dysplasia (conjunctival intraepithelial neoplasia, CIN) to invasive squamous cell carcinoma. The most common ocular surface malignancy. Risk factors include UV exposure, HPV (especially type 16), immunosuppression (HIV), and old age. Presents as a raised, vascular, or leukoplakic limbal mass.
What OptoGuide™ covers for ocular surface squamous neoplasia
- Recognition patterns — symptoms, signs, and differentiators
- Don't-miss risks and escalation triggers
- Management tiers with linked Australian therapeutics
- Referral urgency, specialty, and letter drafting
Free clinical quick guides: symptom-led differentials and referral guides · vertex distance calculator · MBS optometry items