46 results
Pupils: Localization in Coma
 • Small, Reactive pupils: Metabolic coma.
 • Unilateral Fixed, dilated pupil :
Unilateral Fixed ... • Bilateral, Large ... • Bilateral, midposition ... • Horner's syndrome ... #Coma #Neurology
Unilateral Fixed Dilated Pupil - Differential Diagnosis Framework
If Altered Mental Status - Consider Oculomotor (3rd cranial
Dilated Pupil - ... cranial nerve) Palsy ... lntracranial hemorrhage, SAH ... Fixed #Dilated #Pupil ... differential #diagnosis #neurology
Anisocoria Evaluation Flow Chart - Differential Diagnosis
1. Check pupillary reaction to light 
2. Measure pupil size.
Measure pupil size ... noted, re-measure pupil ... - Horner's Syndrome ... Anisocoria - CN III Palsy ... Differential #Diagnosis #Ophthalmology
Mydriasis and Miosis - Differential Diagnosis Framework

Causes of Mydriasis:
Dilated pupils (mydriasis) more than 7mm
 • Unilateral
, Adie's tonic pupil ... response, Serotonin syndrome ... Miosis: Horner's syndrome ... ), DM, SAH #Mydriasis ... differential #diagnosis #ophthalmology
Adie's Pupil
What? Unknown nature & benign
 • Regular and mildly dilated pupil (4-6mm);
 • Light-near dissociaton;
dissociaton; • Usually unilateral ... Holmes-Adie Syndrome ... Diagnosis: • CN Ill Palsy ... #PhysicalExam #neurology ... #ophthalmology
Bilateral tonic pupils observed in the patient with Ross syndrome. 
Absence of bilateral pupillary contraction despite
pupils observed ... #tonic #pupils # ... clinical #video #ophthalmology ... #bilateral #reflex ... #neurology #absent
Bell's palsy
There are many different causes of Facial Nerve Palsy. However, the commonest
cause of unilateral facial
Bell's palsy There ... of Facial Nerve Palsy ... commonest cause of unilateral ... Loss of Corneal Reflex ... #Neurology #Signs
Argyll Robertson Pupil
Definition:
 - Irregular and small (1-2mm) pupil
 - Light-near dissociation (accommodation remains intact)
 -
Argyll Robertson Pupil ... small (1-2mm) pupil ... intact) - Usually bilateral ... #neurology #diagnosis ... #ophthalmology
Argyll-Robertson Pupil on Physical Exam
Small (myotic), irregular pupil that do not react to light but do
Argyll-Robertson Pupil ... myotic), irregular pupil ... fibers of the light reflex ... clinical #video #neurology ... #ophthalmology
CN III Palsy - Oculomotor Nerve
 • Ptosis: Loss of innervation of the levator palpebrae superior.
CN III Palsy - Oculomotor ... comparison to Horner's syndrome ... innervation to pupil ... #CNIII #CN3 #Palsy ... Nerve #Cranial #neurology