Cornea
Monocular Optical Diplopia
Also known as: monocular diplopia, optical diplopia, refractive diplopia, pinhole improves diplopia, ghosting, spectacle misalignment
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
Double or ghosted vision that persists when the fellow eye is covered, which places the cause in the optics of that eye rather than in ocular alignment. Improvement through a pinhole points to an optical origin, with tear film instability, uncorrected astigmatism, corneal irregularity or lens opacity the common contributors. The cover test is the step that separates it from binocular diplopia and its very different work-up.
Recognition
Symptoms: what patients report
- Double or ghosted image persists when the other eye is covered.
- Symptoms may improve with pinhole, blinking, tear film support, or updated refraction.
- Ocular surface discomfort, fluctuating blur, spectacle misalignment, refractive error, corneal defect, lens opacity/displacement, iris defect, or vitreous opacity may contribute.
Signs: what the examination shows
- Diplopia is monocular rather than binocular on cover testing.
- Pinhole improvement supports an optical or refractive cause.
- Ocular surface staining, tear-film instability, corneal irregularity, or refractive error may be present.
- No ocular motility limitation or pupil-involving cranial nerve pattern in typical optical diplopia.
What OptoGuide™ covers for monocular optical diplopia
- 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
- Basic Approach to Diplopia — EyeWiki
- Anterior Eye Disease and Therapeutics A-Z (Bruce & Loughnan) — standard reference text
Standard texts: Kanski's Clinical Ophthalmology: A Systematic Approach, The Wills Eye Manual, Oxford Handbook of Ophthalmology, Oxford American Handbook of Ophthalmology, Signs in Ophthalmology: Causes & Differential Diagnosis.