PURPOSE To report a case of a patient with ischemic retinopathy associated with Crohn's disease. CASE REPORT This report presents a case of a 28-year-old female patient with Crohn's disease and sudden decrease of visual acuity in the right eye. Fluorescein angiography, optical coherence tomography, and multifocal electroretinography confirmed the clinical features of ischemic retinopathy. Aft...

Low spatial frequency (SF) processing has been shown to be impaired in people with schizophrenia, but it is not clear how this varies with clinical state or illness chronicity. We compared schizophrenia patients (SCZ, n = 34), first episode psychosis patients (FEP, n = 22), and healthy controls (CON, n = 35) on a gender/facial discrimination task. Images were either unaltered (broadband spatial...

PURPOSE To evaluate the technique, safety, and efficacy of the retropupillary implantation of iris-claw intraocular lenses in a long-term follow-up study. PATIENTS AND METHODS This retrospective study included 31 eyes of 31 patients who underwent an Artisan aphakic intraocular lens implantation between January 2006 and February 2011 at the University Hospital Essen, Essen, Germany and at the ...

Purpose: To evaluate the clinical efficacy of amniotic membrane extract eye drops (AMEEDs) in patients with persistent epithelial defects (PEDs) cornea.Methods: Sixteen PEDs refractory to conventional treatment were further treated AMEEDs six times a day. Visual acuity, visual analog scale (VAS), esthesiometer score, and areas before after 1 2 months evaluated. After months, considered effectiv...

PURPOSE To investigate how pairs of Zernike modes interact to increase or decrease visual acuity. SETTING Visual Optics Institute, College of Optometry, University of Houston, Houston, Texas, USA. METHODS Subjects read aberrated and unaberrated visual acuity charts 3 times. Each aberrated chart was produced by convolving an aberrated point-spread function with an unaberrated acuity chart. P...

OBJECTIVE To describe visual acuity outcomes of patients in the Ischemic Optic Neuropathy Decompression Trial (IONDT) after 24 months of follow-up. DESIGN The IONDT is a single-masked, multicenter, randomized clinical trial. SETTINGS Patients were evaluated and followed up at 25 clinical centers located throughout the United States. Data were sent to and analyzed at a central coordinating c...

BACKGROUND A common clinical sign in children with subnormal visual acuity or slow visual development was iris transillumination. This was used as the inclusion criterion in a study of children shown to have a subnormal visual acuity in a general health examination at age 4 years. METHODS Refraction values, stereopsis, fundus photography, macular and nerve head appearance, and visual evoked r...

Aim: To evaluate the paradoxical pupillary constriction in darkness in patients with Pingelapese achromatopsia (PA), and to describe a connection between this phenomenon and the clinical features. Methods: 27 patients with PA were examined. All underwent a full ophthalmic examination which included Snellen visual acuity and ophthalmoscopy. Colour vision examination was performed with Ishihara p...

BACKGROUND The purpose of this investigation was to examine if paramedics' frequency of being exposed to highly physically demanding activities, or their perception of physical, clinical, and emotional demands were altered by patients' acuity level, operationalized using the Canadian Triage and Acuity Scale (CTAS). METHODS Physical demands descriptions (PDD) were compiled from thirteen servic...

PURPOSE To determine the effect of optical defocus on the test-retest variability (TRV) of visual acuity measurements in normal subjects. METHODS Normal subjects underwent repeated visual acuity measurement with optical defocus of 0, 0.50, and 1.00 D. All measurements were taken using the Early Treatment Diabetic Retinopathy Study (ETDRS) version of the Bailey-Lovie logMAR chart. TRV was quan...