Neuro-Ophthalmic
Optic Disc Drusen
Also known as: optic nerve head drusen, buried optic disc drusen, pseudopapilloedema, pseudopapilledema, ODD
Filed as: Routine
Source-cited from the record's own evidence list. Clinical content programme led by Dr Ankit Mathur, PhD, Grad Cert Ocu Thera, B.S. Optom. How the clinical content is governed
Clinical decision support only
Overview
Calcified or partially calcified deposits within the optic nerve head that may simulate disc swelling and can be associated with progressive nerve-fibre-bundle visual-field loss. Suspected or confirmed drusen do not automatically exclude true optic-disc oedema or raised intracranial pressure; concerning symptoms, examination or uncertainty must follow the papilloedema pathway.
Recognition
Symptoms: what patients report
- Most patients are asymptomatic.
- Transient visual obscurations may occur.
- Peripheral, arcuate or blind-spot-related field loss may be noticed when function becomes significant.
- Sudden loss is atypical and requires assessment for a vascular or other acute complication.
Signs: what the examination shows
- Small, crowded or elevated optic disc with irregular or lumpy margins.
- Visible refractile bodies when superficial; buried drusen may be difficult to see clinically.
- Anomalous vessel branching and absence of typical hyperaemic oedema may support pseudopapilloedema but do not safely exclude true oedema.
- Often bilateral but potentially asymmetric.
- Visual field may show an enlarged blind spot, arcuate or other nerve-fibre-bundle defect, nasal step or peripheral constriction.
- OCT RNFL/GCC changes may occur, with interpretation limited by anomalous disc anatomy and segmentation.
What OptoGuide™ covers for optic disc drusen
- Pattern reasoning: what this combination of findings points to, and its differentiators
- Don't-miss risks and escalation triggers
- Management tiers with linked Australian therapeutics
- Referral urgency, specialty, and letter drafting
Sources
- Optic Nerve Head Drusen — EyeWiki
- Optic Disc Drusen — NANOS
- The Neuro-Ophthalmology Survival Guide (Pane, Miller & Burdon) — standard reference text
Standard texts: Kanski's Clinical Ophthalmology: A Systematic Approach, Oxford Handbook of Ophthalmology, Oxford American Handbook of Ophthalmology, Signs in Ophthalmology: Causes & Differential Diagnosis.