Journal
Upbeat Nystagmus: What This Vertical Pattern Can Mean
Upbeat nystagmus guide by Dr. Porwal: central causes, Wernicke/stroke red flags, testing and vertigo workup.
Downbeat Nystagmus: A Vertical Eye Movement Warning Sign
Downbeat nystagmus guide by Dr. Porwal: causes, Chiari/cerebellar links, red flags and how it differs from BPPV.
Gaze-Evoked Nystagmus: Why Eyes Drift at Side Gaze
Gaze-evoked nystagmus guide by Dr. Porwal: causes, cerebellar warning signs, medicine effects and vertigo workup.
Nystagmus Types: Peripheral, Central, Vertical and Positional Patterns
Nystagmus types guide by Dr. Porwal: peripheral, central, gaze-evoked, vertical and positional patterns in vertigo diagnosis.
Caloric Test Vertigo: Why Warm and Cool Ear Irrigation Is Used
Caloric test vertigo guide by Dr. Porwal: warm/cool ear irrigation, canal weakness, VNG interpretation and when the test helps.
Frenzel Goggles Nystagmus Test: Why Vertigo Doctors Use Them
Frenzel goggles nystagmus guide by Dr. Porwal: how goggles reveal hidden eye movements in vertigo and why fixation matters.
Dynamic Visual Acuity Test Vertigo: Why Vision Blurs While Walking
Dynamic visual acuity test vertigo guide by Dr. Porwal: oscillopsia, VOR function, walking blur, bilateral vestibular loss and rehab planning.
Rotary Chair Test Vertigo: When Balance Testing Needs More Than VNG
Rotary chair test vertigo guide by Dr. Porwal: bilateral vestibular loss, VOR testing, when it helps and how it differs from VNG.