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WorksheetsOcular Ultrasound
Total questions: 11
Worksheet time: 4mins
Which sonographic finding is most consistent with a retinal detachment?
Mobile, hyperechoic structure crossing the optic nerve
Thin hyperechoic membrane tethered to the optic disc
Hypoechoic crescent anterior to the lens
Irregular posterior globe contour
Which maneuver helps differentiate retinal detachment from posterior vitreous detachment?
Color Doppler
Asking the patient to blink
Dynamic eye movement (“looking left and right”)
Switching to curvilinear probe
Which ultrasound finding is most concerning for retrobulbar hematoma?
Posterior acoustic shadowing
Decreased optic nerve sheath diameter
Lens dislocation
Hypoechoic or mixed echogenic collection posterior to the globe with proptosis
In a prolonged evacuation scenario, which of the following findings would NOT specifically raise concern for elevated intracranial pressure (ICP) in a blast casualty?
Bradycardia
Decline in mental status
Irregular breathing
Optic sheath diameter 4 mm measured 3 mm posterior to the globe
A blast casualty in PFC has decreased visual acuity and tense orbit. Ocular ultrasound shows posterior globe compression. What is the MOST appropriate next step?
Serial ocular ultrasound
Apply eye shield
Perform emergent lateral canthotomy
Administer hypertonic saline
Which type of retinal detachment is associated with worse vision prognosis?
Mac on
Mac off
No difference
Which ocular pathology is associated with a biconvex hyperechoic structure floating in vitreous body?
Foreign body
Retinal detachment
Vitreous hemorrhage
Lens dislocation
Which ocular pathology is associated with "guitar pick sign?"
Retrobulbar hematoma
CRAO
Posterior vitreous detachment
Retinal detachment
An optic nerve sheath diameter (ONSD) greater than 5 mm has been correlated to an intracranial pressure (ICP) greater than ______ ?
15 mmHg
20 mmHg
25 mmHg
30 mmHg
Which ocular pathology is associated with worse vision in the morning?
CRAO
Posterior vitreous detachment
Vitreous hemorrhage
Retinal detachment
An afferent pupillary defect can be seen with which intraocular pathology?
CRAO
Retinal detachment
Vitreous hemorrhage
Posterior vitreous detachment
