Ординатура / Офтальмология / Английские материалы / Ophthalmic Ultrasound A Diagnostic Atlas 2nd edition_ DiBernardo, Greenberg_2006

Figure 2–16 Off-axis scan. It may be necessary to evaluate the anterior segment with the sound beam directed off-axis. This can be accomplished by redirecting the patient’s gaze. In this example, the temporal ciliary body region is being examined.

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Figure 2–17 Ciliary body/normal. The sound beam is aimed away from the cornea, directly over the ciliary body region. Arrow, ciliary body; F, fluid.

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Figure 2–18 Cyclitic membrane. Axial immersion image, aphakic eye. Arrow, cyclitic membrane; C, cornea; I, iris.

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Figure 2–19 Ciliary body mass. (A) Axial scan. Arrow, ciliary body mass; C, cornea; F, fluid, L, lens; P, probe. (B) Transverse scan directly over the lesion. Arrow; ciliary body mass; S, sclera.

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Figure 2–20 Ciliary body mass. This patient was an HIV-positive 20-year-old African-American male who presented with a large amelanotic ciliary body mass. A biopsy was performed, and histopathology was consistent with leiomyoma. (A) Axial immersion. C, cornea; F, fluid; L, dislocated lens; T, tumor. (B) Immersion with the probe directed over the tumor (T). F, fluid; S, sclera (C) Standardized A-scan over the tumor. Arrow, internal tumor spikes; P, posterior tumor surface; S, sclera.

Figure 2–21 20 MHz. 20-MHz probe with a tonometer cover that can be filled with fluid and secured in place with a small rubber band.

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Figure 2–22 High-resolution B-scan (20 MHz). Radial scan of a normal angle region. The probe was placed at the limbus area. The 20-MHz probe produces a 12-mm deep scan. C, cornea; CB, ciliary body; I, iris; L, anterior lens surface; S, sclera.

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Figure 2–24 High-resolution B-scan (20 MHz) of peripheral anterior synechia. (A) Transverse scan through the peripheral anterior chamber showing the focal adhesion of the iris root to the posterior surface of the cornea (arrow). C, cornea; I, iris. (B) Longitudinal image showing occlusion of the angle due to anterior synechia (arrow). C, cornea; I, iris.

Figure 2–31 The normal ciliary body. Cross-section scan using an ultrasound biomicroscope (UBM).

Figure 2–32 Normal cornea. Ultrasound biomicroscope (UBM) scan through the central axis. The two high reflective lines at the top of the scan correspond to the corneal layers. The corneal stroma (S) is located between the lines. Top arrow, epithelium and Bowman’s membrane; bottom arrow, Descemet’s membrane and endothelium; AC, anterior chamber; I, iris; L, lens.

Figure 2–33 Moderately convexed iris. As shown by the ultrasound biomicroscope (UBM) scan. The anterior chamber angle is narrow (arrow). The ciliary processes (CP) are in normal position. C, cornea; I, iris; L, lens.

Figure 2–34 Residual iris stump (I). The ultrasound biomicroscope (UBM) scan shows the membrane (arrow) extending to the ciliary body (CB).

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Figure 2–35 Angle closure. An ultrasound biomicroscope (UBM) longitudinal image of angle closure due to anterior synechia (arrow). The iris root is adherent to the region of the trabecular meshwork. CB, ciliary body.

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Figure 2–36 Anterior chamber cysts. An ultrasound biomicroscope (UBM) longitudinal image of lobulated, peripheral iris cysts

(C) closing the angle.

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Figure 2–37 Iris cyst. (A) An ultrasound biomicroscope (UBM) transverse scan of a large, thin-walled cyst (C). (B) UBM longitudinal view.

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Figure 2–38 Anterior chamber coalescent iris cysts. An ultrasound biomicroscope (UBM) transverse image of coalescent iris cysts (C).

Figure 2–40 Anterior chamber iridociliary cysts. An ultrasound biomicroscope (UBM) transverse scan of multiple iridociliary cysts (arrows).

Figure 2–41 Plateau iris. Note the anterior rotation of the ciliary processes (arrow) and the narrowing of the angle (open arrow) in this ultrasound biomicroscope (UBM) scan.

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Figure 2–43 Pigment dispersion syndrome.

(A) and (B) ultrasound biomicroscope (UBM) longitudinal scans of both eyes showing posterior iris bowing

(I) and the proximity of the zonules to the posterior iris surface (arrows) leading to the pigment loss and increase intraocular pressure.

Figure 2–42 Plateau iris. The ciliary processes (arrow) are located anteriorly, closing the ciliary sulcus as can be seen in this ultrasound biomicroscope scan.

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Figure 2–44 Intraocular lens (IOL) implant. This ultrasound biomicroscope (UBM) scan shows the anterior chamber of an IOL implant (arrow) eroding into the ciliary body in a patient with uveitis- glaucoma-hyphema (UGH) syndrome. AC, anterior chamber; CB, ciliary body.

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Figure 2–45 Anterior chamber, intraocular lens implant. (A) and (B). The ultrasound biomicroscope (UBM) longitudinal image of a haptic (arrow) buried in the peripheral iris in a patient with inflammatory reaction following cataract surgery with lens implantation.

Figure 2–46 Mild angle recession. Ultrasound biomicroscope (UBM) longitudinal scan showing posterior iris displacement and bearing of the ciliary process (arrow).

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Figure 2–48 Cyclodialysis cleft. Ultrasound biomicroscope (UBM) longitudinal scan showing avulsion of the ciliary body (up arrow) from its normal attachment at the scleral spur (down arrow). Note the connection from the anterior chamber to the supraciliary space (double arrow).

Figure 2–50 Iris metastasis. A female patient treated from oat cell carcinoma presenting with solitary iris metastasis. The ultrasound biomicroscope (UBM) revealed a central iris thickening with irregular structure (hypoand hyperechoic areas).

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Figure 2–49 Iris nevus. (A) The ultrasound biomicroscope (UBM) transverse scan showing small, moderately thickened, central iris lesion with hypoechoic layer on the surface. (B) UBM longitudinal scan showing thickened iris from the pupillary margin to the angle (arrow).