The purpose of this study was to investigate the effect of optical defocus on changes of electrical response as a function of retinal region. Twenty-three subjects (aged 19-25 year) with normal ocular health were recruited for global flash multifocal electroretinogram (mfERG) recordings under control (fully corrected) condition, and short-term positive defocus (+2D and +4D) and negative defocus...

AIM To assess retinal function by multifocal electroretinogram (mfERG) in children on atropine eye drops for the treatment of myopia. METHODS mfERGs were recorded in children receiving atropine eye drops (n = 48) once daily for 2 years and in those receiving placebo eye drops (n = 57) for a similar time. All recordings were performed between the second and third month of cessation of atropine...

It has been suggested that changes in the multifocal electroretinogram (mfERG) responses in myopes are primarily due to the increased axial length that accompanies myopia development. We investigated the characteristics of mfERG responses between emmetropes and myopes and determined the contribution of axial length to the mfERG data in 30 subjects (10 emmetropes and 20 myopes) using VERIS I. Th...

Aim: To establish a useful and objective classification for retinitis pigmentosa (RP) to evaluate the disease severity. Methods: This is retrospective cross-sectional study. Visual acuity (VA), visual field (VF) width, ellipsoid zone width on optic cohorence tomography (OCT) multifocal electroretinography (mf ERG) values were obtained from medical records of patients with RP. A scoring criterio...

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...

The multifocal m-sequence technique is a versatile set of tools for visual electrophysiology designed to provide access to the complex dynamic interplay of converging signals in the central nervous system. Here, a number of uses for the technique are demonstrated, with examples from human electroretinography. A simple relationship between the binary kernels extracted from a single experiment pe...