BACKGROUND Noninvasive repetitive transorbital alternating current stimulation (rtACS) can improve visual field size in patients with optic nerve damage, but it is not known if this is of subjective relevance. We now assessed patient reported outcomes to determine the association between visual field changes and vision-related quality of life (QoL). METHODS Patients having visual field impair...

Background/Aim. Impaired vision resulting from glaucoma can have deleterious effects on both physical and mental health. This study aims at examining the adverse impacts of primary open angle (POAG), closure (PACG) pseudoexfoliation (PEG) quality life (QOL). Methods. research, designed as a cross-sectional study, included 102 patients treated for POAG, PACG, or PEG. The were divided into three ...

OBJECTIVE To provide comparisons and a worked example of item- and scale-level evaluations based on three psychometric methods used in patient-reported outcome development-classical test theory (CTT), item response theory (IRT), and Rasch measurement theory (RMT)-in an analysis of the National Eye Institute Visual Functioning Questionnaire (VFQ-25). METHODS Baseline VFQ-25 data from 240 parti...

We investigated the vision-related quality of life (VR-QOL) and the prevalence and severity of depression in patients with herpetic anterior uveitis (AU). This study was conducted in 2012 at the ophthalmology department of the University Medical Center of Groningen (tertiary referral center). We selected patients from an existing uveitis database, all eligible patients were approached. Thirty-s...

OBJECTIVE To validate and assess the relationship between self-reported depression as measured by a single item on the Medical Outcomes Study Short-Form 12 (SF-12) and self-reported visual function. METHODS The Los Angeles Latino Eye Study is population-based and designed to assess the prevalence of visual impairment, ocular disease, and visual functioning in Latinos. Both the 25-item Nationa...

BACKGROUND Patient-reported outcomes are measured in many epidemiologic studies using self- or interviewer-administered questionnaires. While in some studies differences between these administration formats were observed, other studies did not show statistically significant differences important to patients. Since the evidence about the effect of administration format is inconsistent and mainly...

PURPOSE To examine the association between severity of visual field loss (VFL) and self-reported health-related quality of life (HRQOL) in a population-based sample. DESIGN Population-based cross-sectional study. METHODS Participants in the Los Angeles Latino Eye Study (LALES) underwent a comprehensive ophthalmic examination including visual field testing by the Humphrey Automated Field Ana...

BACKGROUND This study characterized the degree of change in health-related quality of life (HRQL) associated with change in visual acuity among patients with diabetic retinopathy. METHODS Data are from a randomized, placebo-controlled trial of ruboxistaurin for vision loss in patients with diabetic retinopathy. Visual acuity was quantified as letters on the ETDRS visual acuity chart. HRQL was...

BACKGROUND To evaluate vision-related quality of life in preoperative age-related cataract patients in China, using the Chinese version of the National Eye Institute Visual Function Questionnaire-25 (CHI-NEI-VFQ-25), together with analyses of its influencing factors. METHODS Cataract patients were interviewed using the CHI-NEI-VFQ-25, and their demographic information was recorded. The Cronba...

In this paper, we study skew cyclic codes over the ring R = Fq + uFq + vFq + uvFq, where u 2 = u, v2 = v, uv = vu, q = p and p is an odd prime. We investigate the structural properties of skew cyclic codes over R through a decomposition theorem. Furthermore, we give a formula for the number of skew cyclic codes of length n over R.