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OBJECTIVE This work proposes creating an automatic system to locate and segment the optic nerve head (ONH) in eye fundus photographic images using genetic algorithms. METHODS AND MATERIAL Domain knowledge is used to create a set of heuristics that guide the various steps involved in the process. Initially, using an eye fundus colour image as input, a set(More)
INTRODUCTION Reducing intraocular pressure (IOP) is the only proven treatment modality for reducing the risk of glaucomatous progression. In this study, we evaluated the safety and efficacy of a new tool in IOP reduction, implanted with cataract surgery: the Glaukos iStent trabecular micro-bypass stent. METHODS This was a prospective, 24-month,(More)
INTRODUCTION Micro-invasive glaucoma surgical implantation of trabecular micro-bypass stents, previously shown to be safe and effective for open-angle glaucoma (OAG) subjects during cataract surgery, was considered for evaluation as a sole procedure. The aim of this study was to evaluate the safety and intraocular pressure (IOP)-lowering efficacy after ab(More)
PURPOSE To establish a map relating visual field (VF) test points to corresponding areas of the retinal nerve fiber layer (RNFL) measured with optical coherence tomography (OCT) in patients with glaucomatous optic neuropathy. METHODS One hundred four consecutive subjects with open-angle glaucoma were prospectively selected. All subjects underwent standard(More)
PURPOSE To establish the reproducibility of a rebound tonometer in humans and the effect of corneal thickness on measurements, comparing it with Goldmann applanation tonometer. METHODS In a first study designed to examine the reliability of the RBT, three experienced ophthalmologists undertook three consecutive intraocular pressure (IOP) measurements in(More)
CASE REPORT We present one patient that received a blunt trauma in his right eye that resulted in ocular hypotension and hypotony maculopathy. UBM demonstrated the presence of a cyclodialysis. Several months later the patient experienced spontaneous improvement. A new UBM documented the presence of an anterior synechia closing the cleft. DISCUSSION(More)
PURPOSE To establish correlations between intraocular pressure (IOP) measurements obtained with the ocular response analyzer (ORA) and the Goldmann applanation tonometer (GAT). The effects of central corneal thickness on the measures obtained were also examined. METHODS This was a cross-sectional study. IOP was determined in 48 eyes of 48 patients with(More)
PURPOSE Charles Bonnet syndrome plus is an exceedingly rare variant of this disorder. The variant has been described in patients with sight impairment and severe hypoacusis, and is usually characterized by complex visual and auditory--musical--hallucinations that the patients recognize as unreal. METHOD Case report. RESULTS A 75-year-old woman diagnosed(More)
OBJECTIVE To assess the safety of posterior chamber phakic intraocular lens (PCPIOL) implantation in patients with high myopia. DESIGN Prospective, noncomparative, interventional case series. PARTICIPANTS Twenty eyes of 10 patients were included. INTERVENTION Staar Collamer Implantable Contact Lens PCPIOLs were implanted for the correction of high(More)
PURPOSE To assess the effects of intravitreal ranibizumab therapy on intraocular pressure (IOP) and retinal nerve fiber (RNFL) thickness. METHODS Forty-nine eyes of 49 patients with neovascular age-related macular degeneration (AMD) treated with intravitreal ranibizumab injections and 27 fellow eyes not requiring treatment were followed for 1 year. RNFL(More)