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...

The genus Metecia Snellen (Noctuidae. Noctuinae) from Southern Argentina and Chile is redescribed and three species are recognized: M. cornifrons Snellen, M. lacustris (Köhler) n. comb., and M. hypothetica (Köhler) n. comb. In addition, Euxoa pampeana Köhler is synonymized with Metecia cornifrons. Adults and male and female genitalia are described and illustrated for the first time, and a key t...

purpose : to investigate the discriminative ability of contrast sensitivity (cs), color vision and best corrected visual acuity (bcva) in detecting functional losses in diabetic participants with and without retinopathy methods : in this cross sectional study we examined 105 patients in khatam-al-anbia eye hospital of mashhad university of medical sciences including 70 diabetic patients (35 wit...

objective: nowadays, many infertile couples can have child by assistant reproductive technology (art). always the undesirable effects of these methods on newborn are considered and are evaluated. the aim of this study is to describe the impact of art on ocular and visual performances of infants born by these methods. materials and methods: in a cross-sectional descriptive study, 479 infants age...

BACKGROUND/AIMS To report the outcome of primary radiotherapy in patients with progressive optic nerve sheath meningioma (ONSM). METHODS The clinical records of all patients were reviewed in a retrospective, observational, multicentre study. RESULTS Thirty-four consecutive patients were included. Twenty-six women and eight men received conventional or stereotactic fractionated radiotherapy, and...

PURPOSE To investigate the correlation of outer retinal layers (ORL) thickness and visual acuity (VA) in patients with diabetic macular edema (DME). METHODS Consecutive DME patients seen at the Retina Clinic of The University of Hong Kong were recruited for OCT assessment. The ORL thickness was defined as the distance between external limiting membrane (ELM) and retinal pigment epithelium (RP...

Purpose. To characterize the economic and quality of life burden of diabetic macular edema (DME) in Canadian patients. Patients and Methods. 145 patients with DME were followed for 6 months with monthly telephone interviews and medical chart reviews at months 0, 3, and 6. Visual acuity in the worst-seeing eye was assessed at months 0 and 6. DME-related healthcare costs were determined over 6 mo...

BACKGROUND The purpose of this work is to report our experience using loteprednol 0.5% for routine prophylaxis after photorefractive keratectomy in an academic refractive surgery center. MATERIALS AND METHODS Photorefractive keratectomy was performed on 579 eyes from 316 patients in this retrospective chart review of patients treated postoperatively with either fluorometholone 0.1% (273 eyes)...