593 results
Optic Nerve Sheath Anatomy - Ocular POCUS
To know you are looking at the optic nerve and
Optic Nerve Sheath ... looking at the optic ... nerve and sheath ... identify: 1. optic ... 4. hyperechoic sheath
Enlarged optic nerve sheath diameter and crescent sign in 30 yo female patient reporting 3 months
Enlarged optic nerve ... sheath diameter
Papilledema on Ocular POCUS

Eye, linear probe, optic nerve (ON) elevation >0.6 mm into globe (crescent sign)
linear probe, optic ... ON sheath diameter
Normal eye - Anterior chamber (a): Located between hyperechoic cornea anteriorly and iris posteriorly Lens (L):
Optic nerve sheath
Approach to Possible Hypertensive Emergency

criteria required to diagnose hypertensive emergency
(1) Severe hypertension
 - Usually a MAP
presence of increased optic ... nerve sheath diameter
Papilledema on Ocular POCUS
17 yo fem w/ HA and blurry vision x 1 month.  VS
Swollen optic disc ... dilated nerve sheath
Pathological Optic Disc Cupping

Note cup-to-disc ratio at least 0.8 (physiologic limit of 0.5).

Thinning of optic disc
Pathological Optic ... Thinning of optic ... neuroretinal rim so that optic ... Glaucoma causes slow death ... of optic nerve
Visual Pathway Neural Lesions
A) Optic Nerve → Left Anopia
B) Optic Chiasm → Bitemporal Hemianopia
C) Lateral Geniculate
Neural Lesions A) Optic ... Left Anopia B) Optic ... Hemianopia D) Optic ... Pathway #Lesions #Optic
Papilledema vs Normal Optic Disc

Blurred vs sharp optic disc margins

#Papilledema #OpticDisc #Normal #Comparison #Fundoscopy #Ophthalmology #Clinical
Papilledema vs Normal Optic ... Blurred vs sharp optic
Acute Monocular Vision Loss - Differential Diagnosis Framework
 • Cornea: Keratitis
 • Anterior Chamber: Hyphema, Acute
Endophthalmitis • Optic ... Nerve: Optic neuritis ... Papilledema, Ischemic Optic ... CRVO, CRAO) • Optic ... bleed) After the optic