Eye Movements, Strabismus, Amblyopia, and Neuro-Ophthalmology Amblyopic Deficit Beyond the Fovea: Delayed and Variable Single-Trial ERP Response Latencies, but Unaltered Amplitudes
نویسندگان
چکیده
Citation: Bankó ÉM, Körtvélyes J, Németh J, Vidnyánszky Z. Amblyopic deficit beyond the fovea: delayed and variable single-trial ERP response latencies, but unaltered amplitudes. Invest Ophthalmol Vis Sci. 2014;55:1109–1117. DOI:10.1167/ iovs.13-13507 PURPOSE. Amblyopia was first described as a deficit of central vision. However, it has long been debated whether this dysfunction is limited to the fovea or whether extrafoveal vision is also affected, as studies concerning the latter are equivocal. The purpose of the study was to resolve this issue.
منابع مشابه
Amblyopic deficit beyond the fovea: delayed and variable single-trial ERP response latencies, but unaltered amplitudes.
PURPOSE Amblyopia was first described as a deficit of central vision. However, it has long been debated whether this dysfunction is limited to the fovea or whether extrafoveal vision is also affected, as studies concerning the latter are equivocal. The purpose of the study was to resolve this issue. METHODS We investigated the amblyopic effect on event-related potentials (ERPs) with foveal an...
متن کاملA directional impairment of eye movement control in strabismus amblyopia.
Saccadic and pursuit tracking movements were elicited to determine the ability of the amblyopic eye to sense and respond to position and motion of the retinal image. Amblyopic eyes were found to initiate saccades as rapidly as normal eyes (200 to 300 msec.), however, the amblyopic eye's saccades were reduced in amplitude, highly variable, and required refinement by subsequent saccades, particul...
متن کاملThe Initiation of Smooth Pursuit is Delayed in Anisometropic Amblyopia
PURPOSE Several behavioral studies have shown that the reaction times of visually guided movements are slower in people with amblyopia, particularly during amblyopic eye viewing. Here, we tested the hypothesis that the initiation of smooth pursuit eye movements, which are responsible for accurately keeping moving objects on the fovea, is delayed in people with anisometropic amblyopia. METHODS...
متن کاملIncreased saccadic latencies in amblyopic eyes.
Increased saccadic latencies were measured in the amblyopic eyes of subjects having amblyopia without strabismus, constant strabismus amblyopia, and intermittent strabismus. The subjects tracked a small, bright spot of light moving with random, horizontal step displacements of 0.25 to 8.5 degrees over the central retina. Normal saccadic latencies were generally found during monocular tracking w...
متن کاملEye Movements, Strabismus, Amblyopia, and Neuro-Ophthalmology Effects of Induced Monocular Blur versus Anisometropic Amblyopia on Saccades, Reaching, and Eye-Hand Coordination
METHODS. Twelve visually-normal participants performed saccades and reach-to-touch movements to targets presented on a computer screen during binocular and monocular viewing. A contact lens was used to blur the vision of one eye to a mean acuity level of 20/50. Saccades and reaching kinematics were compared before blur, immediately after blur, and 5 hours after blur was induced. The 5 hours aft...
متن کامل