2013-12-01 · Optic nerve head drusen that are hidden (A) and visible (C) on fundus photography show positive autofluorescence in both cases (B, D). Interobserver agreement in the assessment of autofluorescence was excellent: ophthalmologist versus optometrist, κ = 0.91 (95% CI, 0.79-1.03); ophthalmologist versus pediatrician, κ = 0.96 (95% CI, 0.87-1.04); and optometrist versus pediatrician, κ = 0.89

• Right of display = Posterior (Optic Nerve) – Probe marker always nasal or UP – Observe/Measure anterior-posterior extent • Use to recheck A scan measurements B-scan Echo Patterns Normal Eye - Horizontal Axial View Temporal Nasal Probe Orientation Extremely important ! Mark on B-scan probe = Top of display

In addi-tion, newer modalities using optic nerve head tomography are proving to be very useful. Since children as well as adults are affected, it is important to consider optic nerve head drusen in the differential diagnosis of papilledema or optic nerve … Optic disc drusen are congenital and developmental anomalies of the optic nerve head seen commonly in clinical practice, often as an incidental ophthalmologic finding during routine exams. 2011-05-06 With the improved resolution of the newer B-scan instrumentation, echography can be used to confirm rapidly and accurately the diagnosis of optic disc drusen. Over a 4-year period, we retrospectively identified 48 patients with the echographic diagnosis of optic disc drusen… Buried drusen can be seen with autofluorescence imaging of the optic nerves, OCT, B-scan ultrasonography and CT scan of the orbits showing calcifications in the optic nerve heads (Fig. 8.44). Pearls.

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The optic cup is absent and the blood vessels show abnormal branching pattern. Look for associated signs: angioid streaks; retinitis pigmentosa; Questions: 1. Fluorescein angiography may be useful in diagnosing deeply buried drusen and may demonstrate a fluorescence spot during the late stages of angiogram. 7 B-scan sonography can evaluate the entire optic disc and is sensitive to calcium deposits buried deeply in the optic tissue, making it the diagnostic modality of choice. 6 Optical coherence tomography may offer enhanced sensitivity for detection of buried drusen … 2007-08-13 Obvious drusen are usually present on the surface of the optic nerve. Some optic nerve drusen are “buried.” Buried drusen can be more difficult to observe and diagnosis may require the use of imaging (ultrasound or CT scan), photography (fluorescein angiography/autoflourescence), or optical coherence tomography (OCT).

• Right of display = Posterior (Optic Nerve) – Probe marker always nasal or UP – Observe/Measure anterior-posterior extent • Use to recheck A scan measurements B-scan Echo Patterns Normal Eye - Horizontal Axial View Temporal Nasal Probe Orientation Extremely important ! Mark on B-scan …

Optic disc drusen are small collections of hyaline material located within the head of the optic nerve (CN II) at variable depths 1-3. The earliest signs of drusen formation histologically are small globular or plaque-like deposits in Bruch membrane of hyaline material, present in the majority of individuals, and perhaps congenital in nature 3 . Fluorescein angiography may be useful in diagnosing deeply buried drusen and may demonstrate a fluorescence spot during the late stages of angiogram. 7 B-scan sonography can evaluate the entire optic disc and is sensitive to calcium deposits buried deeply in the optic tissue, making it the diagnostic modality of choice.

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Although optic nerve drusen do not usually affect Drusen of the Optic Nerve. Drusen can also occur in the optic nerve.

… 2016-01-01 Detection of drusen of the optic disc in children by B-scan ultrasonography. Noël LP, Clarke WN, MacInnis BJ. Distinguishing between anomalous elevation of the optic disc caused by buried drusen and true papilledema can often be clinically difficult. Funduscopy showed bilateral optic disc edema.
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The. technique Drusen were high-intensity areas.

Optic Nerve Head Drusen (B-scan). 0:21 · 1 843 visningar.
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DIFFERENTIAL DIAGNOSIS OF OPTIC DISC ELEVATION. PSEUD. O. PA. PILLO ONH drusen (buried). An obliquely FAF/B-scan: Unremarkable at the disc.

In a study by Wilkens and Pomeranz, 73% of optic discs with visible drusen had abnormal visual fields compared with only 36% of optic discs with buried drusen (P .05). 3 Researchers have used B-scan ultrasound and/or magnetic resonance imaging of the orbit to confirm disc drusen, but these tests are costly and not widely available. Measurement of retinal nerve fiber layer and macular ganglion cell-inner plexiform layer with spectral-domain optical coherence tomography in patients with optic nerve head drusen. Graefes Arch Clin Exp Ophthalmol. 2014;252:1653–1660.