28 results
Anisocoria Evaluation Flow Chart - Differential Diagnosis
1. Check pupillary reaction to light 
2. Measure pupil size.
Check pupillary ... - Horner's Syndrome ... Anisocoria - CN III Palsy ... #Diagnosis #Ophthalmology ... #Pupillary #Pupils
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
Holmes-Adie Syndrome ... Young females Differential ... Diagnosis: • CN Ill Palsy ... #PhysicalExam #neurology ... #ophthalmology
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
Isocoria - Pupillary ... Defects - Differential ... Midbrain (Parinaud's Syndrome ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
Mydriasis and Miosis - Differential ... response, Serotonin syndrome ... Miosis: Horner's syndrome ... , uveitis) • Bilateral ... #diagnosis #ophthalmology
Bilateral tonic pupils observed in the patient with Ross syndrome. 
Absence of bilateral pupillary contraction despite
pupils observed ... pupillary contraction ... clinical #video ... #ophthalmology # ... #neurology #absent
Unilateral Fixed Dilated Pupil - Differential Diagnosis Framework
If Altered Mental Status - Consider Oculomotor (3rd cranial
Dilated Pupil - ... Differential Diagnosis ... cranial nerve) Palsy ... no neurological cause ... diagnosis #neurology
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
One-and-a-half Syndrome ... Skew Deviation Casey ... #Localization #ophthalmology ... #neurology #differential ... #diagnosis #ocular
Persistent Pupillary Membrane (PPM) on Slit Lamp Ocular Examination

This membrane would be a remainder of the
Persistent Pupillary ... large enough to cause ... #Membrane #Pupil ... #clinical #video ... #ophthalmology
Convergence Retraction Nystagmus with a left 6th nerve palsy

Caused by a Midbrain hemorrhage

Dr. Boby Varkey Maramattom
left 6th nerve palsy ... Caused by a ... retraction #nystagmus #ocular ... physicalexam #clinical #video ... #neurology #ophthalmology
Relative Afferent Pupillary Defect

This maneuver of intermittent light stimulus is called the alternating light test or
Marcus Gunn's pupils ... clear sign of unilateral ... regarding the cause ... #Defect #Neurology ... #Clinical #Video