Ocular Ultrasound

Front

Which sonographic finding is most consistent with a retinal detachment? Options: 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

Back

Thin hyperechoic membrane tethered to the optic disc

Front

Which maneuver helps differentiate retinal detachment from posterior vitreous detachment? Options: Color Doppler, Asking the patient to blink, Dynamic eye movement (“looking left and right”), Switching to curvilinear probe

Back

Dynamic eye movement (“looking left and right”)}}]}

Front

Which ultrasound finding is most concerning for retrobulbar hematoma? Options: Posterior acoustic shadowing, Decreased optic nerve sheath diameter, Lens dislocation, Hypoechoic or mixed echogenic collection posterior to the globe with proptosis

Back

Hypoechoic or mixed echogenic collection posterior to the globe with proptosis

Front

In a prolonged evacuation scenario, which finding would NOT specifically raise concern for elevated intracranial pressure (ICP) in a blast casualty? Options: Bradycardia, Decline in mental status, Irregular breathing, Optic sheath diameter 4 mm measured 3 mm posterior to the globe

Back

Optic sheath diameter 4 mm measured 3 mm posterior to the globe

Front

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?

Back

Perform emergent lateral canthotomy

Front

Which type of retinal detachment is associated with worse vision prognosis?

Back

Mac off

Front

Which ocular pathology is associated with a biconvex hyperechoic structure floating in vitreous body?

Back

Lens dislocation

Front

Which ocular pathology is associated with "guitar pick sign?"

Back

Retrobulbar hematoma

Front

An optic nerve sheath diameter (ONSD) greater than 5 mm has been correlated to an intracranial pressure (ICP) greater than ______ ?

Back

20 mmHg

Front

Which ocular pathology is associated with worse vision in the morning? Options: CRAO, Posterior vitreous detachment, Vitreous hemorrhage, Retinal detachment

Back

Vitreous hemorrhage