PURPOSE Usher's syndrome (US) is a group of genetically distinct autosomal conditions, characterized by sensorineural hearing loss accompanied by a retinal dystrophy indistinguishable from retinitis pigmentosa (RP). The purpose of this study was to analyze full-field electroretinography (ERG) and visual acuity (VA) among patients with type I and II Usher's syndrome. METHODS Electroretinograph...

We evaluated the color vision of mercury-contaminated patients and investigated possible retinal origins of losses using electroretinography. Participants were retired workers from a fluorescent lamp industry diagnosed with mercury contamination (n = 43) and age-matched controls (n = 21). Color discrimination was assessed with the Cambridge Colour Test (CCT). Retinal function was evaluated by u...

Four cases of albinism with haemorrhagic diathesis (Hermansky-Pudlak syndrome) are presented. The cases displayed wide phenotypic variation. Electroretinography was performed on all four patients and was found to be normal. One patient developed a cutaneous malignant melanoma.

Purpose To accurately evaluate the autoimmune inflammation, we aim to develop three quantitative measurements to monitor the inflammatory changes in the retina: retinal-choroidal thickness, major retinal vessel diameter, and electroretinography amplitudes. Methods During a 21-day experimental period, eyes were examined by confocal scanning laser ophthalmoscopy, optical coherence tomography, f...

OBJECTIVES To characterize the clinical phenotype and to study the course of disease in patients with Alström syndrome, with an emphasis on retinal function assessed with full-field electroretinography (ERG). METHODS Three age- and sex-matched patients with Alström syndrome were selected from our retinitis pigmentosa register for repeated ophthalmologic examinations that included tests for co...

Individual types of retinal dysplasia – folds, geographic and detached, have different impacts on vision ability. The purpose of this study was to undertake a qualitative and comparative evaluation of retinal activity in the individual types of the retinal dysplasia – folds, geographic and detached. Dogs (n = 24) with an ophthalmoscopic diagnosis of retinal dysplasia (rd) underwent vision testi...

OBJECTIVE To determine whether there are changes in the peripapillary nerve fibre layer, in colour vision, contrast sensitivity, dark adaptation and electroretinography changes in these patients who do not have infectious retinitis. METHODS We studied 52 patients without ocular pathology; the mean age was 35.88 years old. RESULTS We observed less thickness in all quadrants, except the nasal...

A case is presented of a very rare type of Usher's syndrome detected in a 30-year-old woman in her 28th week of pregnancy. She reported left eye visual impairment with a one-month history. She underwent standard ophthalmologic examination with additional procedures scheduled after childbirth, including fluorescein angiography, visual field (Goldman and Octopus) and electroretinography. Fundus e...