Poi Sensei's Eye Dojo

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Neuro-ophthalmology

Poi Sensei

Internuclear ophthalmoplegia and one-and-a-half syndrome: the horizontal gaze pathway seen from above

Neuro-ophthalmology

Internuclear Ophthalmoplegia and One-and-a-Half Syndrome: Localizing a Horizontal Gaze Palsy

October 15, 2026 Poi Sensei

Reading anisocoria: which pupil is abnormal, and what to do next. A line drawing of two eyes, one with a small pupil and one with a larger pupil, each with a yellow measuring bracket, with icons for light versus dark, ptosis and an eye drop

Neuro-ophthalmology

Anisocoria: How to Tell Which Pupil Is Abnormal, and What to Do Next

October 6, 2026 Poi Sensei

Optic neuritis: AQP4, MOG and what the ONTT really showed. A line drawing of an eyeball with the optic nerve behind it highlighted in yellow, with icons for pain on eye movement, a swollen optic disc and an antibody

Neuro-ophthalmology

Optic Neuritis: Typical Features, AQP4 and MOG Antibodies, and What the ONTT Really Showed

September 26, 2026 Poi Sensei

Intorsion vs extorsion: which muscles roll the eye, and how to see torsion. A line drawing of an eyeball rolling around its visual axis, with icons for the 12 o'clock mark, the fundus and the double Maddox rod

Neuro-ophthalmology

Intorsion vs Extorsion: Which Muscles Roll the Eye, and How to See Torsion in Your Patient

September 25, 2026 Poi Sensei

Bielschowsky head tilt test: the eyes counter-roll when the head tilts, and in superior oblique palsy the affected eye goes up

Neuro-ophthalmology

Bielschowsky Head Tilt Test: Why the Eye Goes Up, and How to Read It

September 17, 2026 Poi Sensei

Eye movement chart: extraocular muscle actions by gaze. Line drawings of both eyes in the nine positions of gaze, with arrows showing each direction

Neuro-ophthalmology

Eye Movement Chart: Extraocular Muscle Actions by Gaze

April 6, 2025 Poi Sensei