Navegando por Palavras-chave "Gonioscopy"
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- ItemAcesso aberto (Open Access)Coloboma típico associado à síndrome de clivagem de câmara anterior e microcórnea: descrição de um caso(Conselho Brasileiro de Oftalmologia, 2004-02-01) Vlainich, Ana Regina Cruz; Allemann, Norma [UNIFESP]; Neustein, Isaac; Hospital do Servidor Público Estadual de São Paulo Departamento de oftalmologia Setor de ultra-som; Universidade Federal de São Paulo (UNIFESP); Hospital do Servidor Público Estadual de São Paulo Departamento de OftalmologiaThe authors describe a rare association of bilateral typical coloboma, microcornea and anterior chamber cleavage deficience. They also discuss the embriology and the difficulties to identify if the continuous and insidious vision impairment is due to coloboma or to other associated disease, like glaucoma. Supplementary tests, such as visual field, ophthalmoscopy, and tonometry are not reliable because of the presence of nistagmus and low visual acuity.
- ItemAcesso aberto (Open Access)Direct cyclopexy surgery for post-traumatic cyclodialysis with persistent hypotony: ultrasound biomicroscopic evaluation(Conselho Brasileiro de Oftalmologia, 2014-01-01) Murta, Fabiola [UNIFESP]; Mitne, Somaia [UNIFESP]; Allemann, Norma [UNIFESP]; Paranhos Junior, Augusto [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Cyclodialysis is a relatively rare condition usually caused by ocular injury; however, it can also be caused iatrogenically during intraocular surgery. Hypotony maculopathy is the most important complication and the primary reason for visual loss. Clinical diagnosis using gonioscopy may be difficult, and ultrasound biomicroscopy (UBM) can be an alternative. There are different kinds of treatments, and the optimal one remains controversial. Here we describe a case of traumatic cyclodialysis with persistent ocular hypotony treated by direct cyclopexy, as illustrated by UBM performed before and after surgery.
- ItemAcesso aberto (Open Access)Glaucoma anterior chamber morphometry based on optical Scheimpflug images(Conselho Brasileiro de Oftalmologia, 2010-12-01) Alonso, Ruiz Simonato; Ambrósio Junior, Renato; Paranhos Junior, Augusto [UNIFESP]; Sakata, Lisandro Massanori [UNIFESP]; Ventura, Marcelo Palis; Universidade Federal Fluminense Department of Ophthalmology; Instituto de Olhos Ambrósio Department of Ophthalmology; Universidade Federal de São Paulo (UNIFESP)Purpose: To compare the performance of gonioscopy and noncontact morphometry with anterior chamber tomography (High Resolution Pentacam - HR) using optical Scheimpflug images in the evaluation of the anterior chamber angle (ACA). Methods: Transversal study. 112 eyes from 74 subjects evaluated at the Glaucoma Department, Fluminense Federal University, underwent gonioscopy and Pentacam HR. Using gonioscopy, the ACA was graded using the Shaffer Classification (SC) by a single experienced examiner masked to the Pentacam HR findings. Narrow angle was determined in eyes in which the posterior trabecular meshwork could not be seen in two or more quadrants on non-indentation gonioscopy (SC Grade 2 or less). Pentacam HR images of the nasal and temporal quadrants were evaluated by custom software to automatically obtain anterior chamber measurements, such as: anterior chamber angle (ACA), anterior chamber volume (ACV) and anterior chamber depth (ACD). Results: Based on gonioscopy results, 74 (60.07%) eyes of patients classified as open-angle (SC 3 and 4) and 38 (33.93%) eyes of patients classified as narrow-angle (SC 1 and 2). Noncontact morphometry with Scheimpflug images revealed a mean ACA of 39.20 ± 5.31 degrees for open-angle and 21.18 ± 7.98 degrees for narrow-angle. The open-angle group showed significant greater ACV and ACD values when compared to narrow-angle group (ACV of 193 ± 36 mm³ vs. 90 ± 25 mm³, respectively, p<0.001; and ACD of 3,09 ± 0,42 mm vs. 1,55 ± 0,64 mm, respectively, p<0.0001.). In screening eyes with open-angle and narrow-angle with the Pentacam ACA of 20º (SC Grade 2) using the ROC curves, the analysis showed 52.6% of sensitivity and 100% of specificity. Conclusions: The Pentacam showed ability in detecting eyes at risk for angle closure analyzing ACV and ACD.
- ItemAcesso aberto (Open Access)Gonioscopia e tomografia de coerência óptica em pacientes com câmara anterior rasa(Universidade Federal de São Paulo (UNIFESP), 2020-12-18) Esporcatte, Bruno Leonardo Barranco [UNIFESP]; Tavares, Ivan Maynart [UNIFESP]; Universidade Federal de São PauloThis study aims to assess angular closure using gonioscopy and anterior segment optical coherence tomography (AS-OCT). Objective: To evaluate the gonioscopy performed by general ophthalmologists (GO) and glaucoma expert (GE) and AS-OCT (Visante® OCT and DRI OCT Triton®), in patients with a shallow anterior chamber. Methods: Forty-four eyes (44 patients) with shallow anterior chamber, defined by a ratio of peripheral anterior chamber depth to peripheral corneal thickness (PACD / PCT) <1⁄2 were included. Gonioscopy was performed in all subjects by two GE (GE1 and GE2) and one GO. Anterior segment imaging was obtained using Visante® OCT and DRI OCT Triton®. Agreement between examiners was assessed with the first-order agreement coefficient (AC1). Results: The mean age of participants was 65.8±9.3 years. Seven male and 37 female subjects were evaluated. Twenty-six (59%) patients had PACD / PCT <1/4 (grade I) and in 18 (41%) patients the PACD / PCT was between 1/4 and 1/2 (grade II). The agreement between GE1 and GE2 for static gonioscopy was substantial (AC1=0.63), and moderate during dynamic gonioscopy (AC1=0.56). The agreement between the GE1 and the GO was moderate (AC1=0.50) during static gonioscopy and slight (AC1=0.12) during the indentation maneuver. GE1 classified 72% of the evaluated quadrants as closed, while the GO, Visante® OCT and DRI OCT Triton® detected a closed quadrant in 68%, 58%, and 34%, respectively. There was a significant difference between all quantitative parameters obtained by AS-OCT, especially the lens vault, which showed a difference between the Visante® OCT, and the DRI OCT Triton® of 559±107 μm (p<0,001). Conclusions: The diagnostic agreement between GE and GO was moderate in static gonioscopy and poor in dynamic gonioscopy. The GE1 detected more closed quadrants than the GO and AS-OCT devices. A significant difference between parameters analyzed by AS-OCT devices was observed. Significant differences were observed between all quantitative parameters measured by Visante® OCT and DRI OCT Triton®, especially in lens vault measurement.