Ultrasound Biomicroscopy Dark Room Provocative Testing:, A Quantitative Method for Estimating Anterior Chamber Angle Width

Ishikawa, Hiroshi; Esaki, Koji; Liebmann, Jeffrey M.; Uji, Yukitaka; Ritch, Robert

doi:10.1016/s0021-5155(99)00139-2

Cited by 75 publications

(59 citation statements)

References 24 publications

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“…A UBM tem, entre as suas várias indicações, a de definir a relação entre as estruturas do segmento anterior, possibilitando o melhor entendimento dos mecanismos de oclusão do seio camerular e de diferentes tipos de glaucoma, a de fornecer informações importantes de estruturas intra-oculares anteriores antes de cirurgias em pacientes que apresentam opacidade da córnea, e a de avaliar cistos e tumores de íris e do corpo ciliar não visibilizados em exame de rotina (1)(2)(3)(4)(5) .…”

Section: Introductionunclassified

Prevalência de cistos iridociliares em exames de biomicroscopia ultra-sônica

Cronemberger¹,

Ferreira²,

Diniz-Filho³

et al. 2006

Arq. Bras. Oftalmol.

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Section: Introductionunclassified

Prevalência de cistos iridociliares em exames de biomicroscopia ultra-sônica

Cronemberger¹,

Ferreira²,

Diniz-Filho³

et al. 2006

Arq. Bras. Oftalmol.

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“…[1][2][3][4] Relative pupillary block and iris crowding are involved in the development of angle closure in PACG. Ultrasound biomicroscopy (UBM) is usually able to determine the mechanism of elevated intraocular pressure (IOP) by showing the relationship between the peripheral iris and the trabecular meshwork.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound Biomicroscopic Changes after Laser Iridotomy or Trabeculectomy in Angle-closure Glaucoma

Yoon

Won

Cho

et al. 2004

Korean J Ophthalmol

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This study was performed to demonstrate the ultrasound, biomicroscopic and dimensional changes of angle structure after laser iridotomy (LI) and primary trabeculectomy (PT) in primary angle-closure glaucoma (PACG). Angle-opening distance at a point 500(m from the scleral spur (AOD500), trabecular-iris angle (Θ 1 ), trabecular ciliary process distance (TCPD), ciliary process-iris angle (CPI), iris thickness (ID1, ID3), length of iris-lens contact distance (ILCD) and anterior chamber depth (ACD) were assessed before and after each procedure. Thirteen patients with LI and 16 with PT were prospectively enrolled. There were statistically significant increases in AOD500, Θ 1 , and ILCD in both groups. CPI was decreased in both groups. ACD, TCPD, and iris thickness were not changed significantly. The changes in angle configuration after LI or PT may result more from alterations in aqueous pressure gradients across the iris and the changes of configuration were greater in the iris roots without rotation of ciliary body. However, we didn't find any significant differences in the changes of parameters between the two procedures.

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“…Ultrasound biomicroscopy (UBM) is a high-resolution imaging of the anterior segment that allows an objective evaluation of the angle morphology using an automated software programme. [12][13][14] In the present study we undertook a prospective evaluation of the changes in the anterior segment morphology induced by an LPI in eyes…”

mentioning

confidence: 99%

Comparison of ultrasound biomicroscopic parameters after laser iridotomy in eyes with primary angle closure and primary angle closure glaucoma

Dada

Mohan

Sihota

et al. 2006

Eye

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Purpose To study changes in anterior segment morphology after laser peripheral iridotomy (LPI) in primary angle closure (PAC) and primary angle closure glaucoma (PACG) using ultrasound biomicroscopy (UBM). Methods Ninety-three eyes of 93 patients underwent anterior segment evaluation including gonioscopy, disc evaluation with þ 90D lens, applanation intraocular pressure, and standard achromatic perimetry. UBM was performed before and 2 weeks after Nd:YAG LPI to measure the trabecular-iris angle (TIA), the angle-opening distance (AOD 250/500), and the central anterior chamber depth (ACD). Results The superior TIA widened from a mean of 7.5473.15 to 15.6676.691 (P ¼ 0.0001), the inferior TIA increased from a mean of 9.074.7 to 15.976.81 (P ¼ 0.0001) after LPI in PAC. In PACG, the mean superior angle changed from 4.5572.5 to 6.1273.81 (P ¼ 0.4) and the inferior angle increased from 4.7572.0 to 7.973.71 ( P ¼ 0.1). The mean ACD increased from 2.1970.36 to 2.3070.36 mm in PAC group (P ¼ 0.0003), with no significant change seen in the PACG group (1.7970.32 vs 1.8270.33 mm, P ¼ 0.13). Conclusion LPI leads to a widening of the anterior chamber angle and a deepening of the anterior chamber in eyes with PAC. It does not significantly change any anterior segment parameters in eyes with PACG.

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Ultrasound Biomicroscopy Dark Room Provocative Testing:, A Quantitative Method for Estimating Anterior Chamber Angle Width

Cited by 75 publications

References 24 publications

Prevalência de cistos iridociliares em exames de biomicroscopia ultra-sônica

Prevalência de cistos iridociliares em exames de biomicroscopia ultra-sônica

Ultrasound Biomicroscopic Changes after Laser Iridotomy or Trabeculectomy in Angle-closure Glaucoma

Comparison of ultrasound biomicroscopic parameters after laser iridotomy in eyes with primary angle closure and primary angle closure glaucoma

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