Publications by authors named "Luis G Biteli"

Purpose: To assess the efficacy and safety of the new Susanna glaucoma drainage device (SGDD) in patients with neovascular and refractory glaucomas.

Materials And Methods: In this prospective study, patients with neovascular glaucoma or refractory glaucomas (defined as eyes with previous trabeculectomy failure) were enrolled. All eyes had to have intraocular pressure (IOP) above 21 mm Hg despite maximum tolerated topical medication, or recent documentation of anatomic and/or functional progression.

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Background: To identify success predictors and to study the role of the fellow untreated eye as a co-variable for adjustment of intraocular pressure (IOP) outcomes following selective laser trabeculoplasty (SLT) in early open-angle glaucoma (OAG) patients.

Methods: A case series was carried out. Patients with uncontrolled early OAG or ocular hypertension (inadequate IOP control requiring additional treatment) underwent SLT (one single laser session) performed by the same surgeon in a standardized fashion.

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Among all glaucoma suspects, eyes with optic nerve head features suspicious or suggestive of early glaucoma are probably those that offer the greatest challenge for clinicians. In contrast with the robust longitudinal data published on ocular hypertension, there is no specific management guideline for these patients. Therefore, evaluating eyes with suspicious optic disc appearance and normal intraocular pressure (IOP), we sought to investigate potential differences in clinical and epidemiological characteristics to differentiate those with normal-tension glaucoma (NTG) from those with presumed large physiological optic disc cups (pLPC).

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Purpose: To investigate the suitability of the visual field index (VFI) in different degrees of disease severity in glaucoma patients.

Methods: In this cross-sectional study, we consecutively enrolled patients with primary open-angle glaucoma and glaucoma suspects (ocular hypertension). All eyes required a reliable standard automated perimetry (SAP) test to be included.

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We evaluated the ability of spectral-domain optic coherence tomography (SD-OCT) to differentiate large physiological optic disc cupping (LPC) from glaucomatous cupping in eyes with intraocular pressure (IOP) within the normal range. We prospectively enrolled patients with glaucoma or presumed LPC. Participants had optic discs with confirmed or suspected glaucomatous damage (defined as a vertical cup-to-disc ratio≥0.

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Article Synopsis
  • The study aimed to evaluate the prevalence and treatment outcomes of non-pupillary block angle-closure mechanisms in Brazilian patients who underwent laser peripheral iridotomy (LPI) from 2009 to 2012.
  • A total of 196 eyes were assessed, with LPI successfully opening the angle in 86% of patients and significantly reducing intraocular pressure (IOP) from 18.3 to 15.4 mmHg.
  • Among patients with persistent angle closure, plateau iris and lens-induced mechanisms were most common, and most were effectively treated with argon laser peripheral iridoplasty (ALPI), resulting in a 90% success rate in achieving non-occludable angles.
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Background: To investigate possible differences in neuroretinal rim distribution, vascular pattern, and peripapillary region appearance between eyes with presumed large physiological optic disc cupping (pLPC) and eyes with minimal optic disc excavation.

Methods: We prospectively enrolled consecutive subjects with pLPC and individuals with minimal excavation (optic disc excavation within normal limits; control group). All eyes had normal visual fields and untreated intraocular pressure (IOP) <21 mmHg.

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Pigmented paravenous retinochoroidal atrophy is an ocular disease characterized by outer retina and choroidal atrophy often with overlying intraretinal bone spicule pigment deposition along the retinal veins. As a rare condition, there is scant information in the literature regarding the pattern of inner retinal layers involvement. We present a case of a 41-year-old white man initially referred for a glaucoma evaluation.

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Purpose: The purpose of the study was to report a patient with primary angle closure associated with a different nonpupillary block mechanism in which an abnormally thick peripheral iris assumes a cross-sectional shape resembling a cobblestone.

Methods: This is a case report focussing on clinical and imaging description.

Results: Slit-lamp biomicroscopy revealed patent laser peripheral iridotomies OU.

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To investigate subconjunctival bevacizumab as an adjuvant in first-time glaucoma filtration surgery, we conducted a non-comparative, interventional case series, enrolling consecutive patients with uncontrolled primary glaucomas. All patients underwent trabeculectomy with mitomycin C and received a 1.25 mg subconjunctival bevacizumab injection at completion of the surgery.

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Background:   To investigate the association between corneal biomechanics and optic nerve head morphology in newly diagnosed primary open-angle glaucoma patients.

Design:   Hospital based prospective study.

Participants:   Forty-two untreated newly diagnosed primary open-angle glaucoma patients.

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Purpose: To investigate corneal viscoelasticity in primary open-angle glaucoma patients with and without diabetes mellitus, and to correlate corneal hysteresis (CH) with central corneal thickness (CCT).

Methods: In this cross-sectional study, 44 primary open-angle glaucoma patients [19 with diabetes (34 eyes) and 25 without diabetes (40 eyes)] underwent a complete ophthalmic examination. Data collected by masked investigators included CH and CCT using the Ocular Response Analyzer.

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