Relationship between visual acuity and eye position variability during foveations in congenital nystagmus.

摘要: Visual acuity in congenital nystagmus has proven to be primarily related the duration of foveation periods, during which image a target falls onto fovea and eye velocity slows down. It was found that longer time higher visual acuity. However, cycle-to-cycle variability position periods also contribute A high foveations hinders stable placement on centralmost consequently decreases To investigate relationship between different features acuity, infrared- oculographic electro-oculographic recordings 20 patients affected by were analysed gaze positions. In several patients' recordings, (i.e. greater than 0.5°) detected. Correspondingly, low measured, spite sufficiently long periods. The standard deviation positions used measure this it correlated conjunction with mean On basis data analysis, an exponential is proposed relate foveations.