Navegando por Palavras-chave "Iris diseases"

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    Non-pupillary block angle-closure mechanisms: a comprehensive analysis of their prevalence and treatment outcomes
    (Consel Brasil Oftalmologia, 2014-11-01) Junqueira, Daniela L. M.; Prado, Vitor G. [UNIFESP]; Lopes, Flavio S. [UNIFESP]; Biteli, Luis Gustavo [UNIFESP]; Dorairaj, Syril; Prata, Tiago S. [UNIFESP]; Hosp Med Olhos; Universidade Federal de São Paulo (UNIFESP); Mayo Clin
    Purpose: To assess the prevalence and treatment outcomes of angle-closure mechanisms other than pupillary block in a population of Brazilian patients.Methods: A retrospective chart review was conducted to evaluate patients who had undergone laser peripheral iridotomy (LPI) due to occludable angles at a single institution between July 2009 and April 2012. An occludable angle was defined as an eye in which the posterior trabecular meshwork was not visible for >= 180 degrees on dark-room gonioscopy. Key exclusion criteria were any form of secondary glaucoma and the presence of >90 degrees of peripheral anterior synechiae. Collected data were age, race, gender, angle-closure mechanism (based on indentation goniocopy and ultrasound biomicroscopy), intraocular pressure (IOP), number of antiglaucoma medications and subsequent management during follow-up. If both eyes were eligible, the right eye was arbitrarily selected for analysis.Results: A total of 196 eyes of 196 consecutive patients (mean age 58.3 +/- 11.6 years) who underwent LPI were included. in most of the patients [86% (169 patients; 133 women and 36 men]), LPI sucessfully opened the angle. Mean IOP was reduced from 18.3 +/- 6.4 mmHg to 15.4 +/- 4.5 mmHg after LPI (p<0.01). Among the 27 patients with persistent occludable angles, the most common underlying mechanisms were plateau iris (56%) and lens-induced component (34%). Most of these patients (85%) were treated with argon laser peripheral iridoplasty (ALPI); approximately 90% showed non-occludable angles following the laser procedure (mean IOP reduction of 18.9%), with no significant differences between patients with plateau iris and lens-induced components (p=0.34; mean follow-up of 11.4 +/- 3.6 months).Conclusions: Our findings suggest that, in this population of Brazilian patients, several eyes with angle closure were not completely treated with LPI. in the present large case series involving middle-age patients, plateau iris was the leading cause of persistent angle closure and was effectively treated with ALPI. A detailed eye examination with indentation gonioscopy should always be performed after LPI to rule out persistent angle closure due to non-pupillary block mechanisms.
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    Prótese de íris, na aniridia traumática, como tentativa de controlar glaucoma refratário provocado pela presença de óleo de silicone na câmara anterior: relato de caso
    (Conselho Brasileiro de Oftalmologia, 2005-06-01) Torres, Rogil José De Almeida [UNIFESP]; Luchini, Andréa; Torres, Rogério João De Almeida; Abib, Fernando César; Torres, Reginaldo Antônio De Almeida; Universidade Federal de São Paulo (UNIFESP); Centro Oftalmológico de Curitiba; Faculdade Evangélica do Paraná; Universidade Federal de Minas Gerais; Universidade Federal do Paraná
    The objective of this report is to demonstrate the effectiveness of an iris prosthesis to treat a refractory glaucoma induced by silicone oil in the anterior chamber. This case is about a patient who suffered a trauma caused by firearm shrapnel. A vitreous-retinal surgery was performed to remove intraocular foreign matter and to realign the retina that was detached. Due to the partial traumatic aniridia, silicone oil that was introduced in the vitreous chamber to keep the retina in place migrated to the anterior chamber, resulting in the decrease of endothelium cells and uncontrollable intraocular pressure. We performed transscleral fixation of the iris prosthesis to correct these problems. After a 45-month period of evolution, sight became stable at the 1 meter finger-count distance and intra-ocular pressure at 14 mmHg We may conclude that the triad that consists of lack of: iris diaphragm, aphakia and silicone oil that could not be removed because of inexorable occurrence of detachment of the retina should lead the surgeon to consider transscleral fixation of the iris prosthesis. This procedure might control intraocular pressure and/or preserve corneal transparency, preventing silicone oil from contact with the trabecular net and the corneal endothelium.
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    Punção estromal anterior na descompensação corneana secundária à iridosquise: relato de caso e revisão da literatura
    (Conselho Brasileiro de Oftalmologia, 2003-10-01) Fontes, Bruno Machado [UNIFESP]; Alvarenga, Lênio Souza [UNIFESP]; Vieira, Luís Antonio [UNIFESP]; Souza, Luciene Barbosa de [UNIFESP]; Freitas, Denise de [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    To describe the treatment of localized bullous keratopathy secondary to iridoschisis with anterior stromal puncture in a 81-year-old female with iridoschisis and localized corneal edema, in whom anterior stromal puncture was performed. Ocular examination showed inferior iridoschisis in the right eye, with localized edema in the area of contact between the fibers and the endothelium. Photocoagulation of the fibers was performed but no biomicroscopic changes were observed. Anterior stromal puncture was performed and a complete resolution of symptoms was observed. We suggest that anterior stromal puncture should be considered as an option to reduce the symptoms of patients with localized corneal edema secondary to iridoschisis. Review of the literature about palliative treatments for bullous keratopathy was also performed.
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    Rubeosis capsulare: um caso incomum de rubeosis iridis em paciente com implante de lente intra-ocular - Relato de caso
    (Conselho Brasileiro de Oftalmologia, 2002-12-01) Rosa, Alexandre A. Marques; Souza, Eduardo Cunha De; Barth, Breno; Nosé, Walton [UNIFESP]; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP)
    The authors report a rare case of a diabetic patient with rubeosis iridis who had cataract extraction with intraocular lens implantation, in whom neovascularization developed within the posterior lens capsule.