Poi Sensei｜Ophthalmology Explained Simply and Visually

Poi Sensei's Eye Dojo

Header banner: line drawings of an eyeball cross-section and a fundus with an ERG trace on an indigo background

Ophthalmology, explained simply and visually.

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

Hess chart interpretation: which muscle is weak, and is it really a palsy? Two Hess charts side by side with a smaller paretic field and an overacting yoke muscle

Ophthalmic Examinations

Hess Chart Interpretation: Which Muscle Is Weak, and Is It Really a Palsy?

September 16, 2026 Poi Sensei

White dot syndromes: telling them apart on fluorescein angiography. A fundus photograph with scattered white dots, and icons for laterality, early FA, late FA and a checklist

White Dot Syndromes: Telling Them Apart on Fluorescein Angiography

September 15, 2026 Poi Sensei

EOG test: the Arden ratio and what it tells you. The eye and RPE, the dark trough and light peak on the Arden curve, and icons for RPE, DT, LP and the ratio

Ophthalmic Examinations

EOG Test: The Arden Ratio and What It Tells You

September 7, 2026 Poi Sensei

VEP test: how to read a visual evoked potential. A checkerboard stimulus, the visual pathway and the N75-P100-N145 waveform

Ophthalmic Examinations

VEP Test: How to Read a Visual Evoked Potential

September 6, 2026 Poi Sensei

Drusen subtypes: how to tell them apart on OCT and FA. Four fundus images with matching OCT sections, and icons for position, OCT, FA and pattern

Macular Diseases

Drusen Subtypes: How to Tell Them Apart on OCT and FA

September 2, 2026 Poi Sensei

How to read fluorescein angiography: a pattern-based approach. Three fluorescein angiograms showing hyperfluorescence, hypofluorescence and pattern recognition

Ophthalmic Examinations

How to Read Fluorescein Angiography: A Pattern-Based Approach

August 28, 2026 Poi Sensei