Studies on the Eye & Eccentric Gaze

Abstract

Researcher shows, out of 68 healthy individuals with the ages of 19 -56, researcher looked at their capacity for maintaining eccentric horizontal or vertical gaze angles. In a dim setting, subjects tried to maintain visual fixation on a quickly flashed object that was positioned 30 degrees horizontally and 15 degrees vertically. One may typically assess their ability to maintain an eccentric gaze by fitting centripetal eye wandering by exponential curves and calculating the time constant (c) of these sluggish intervals of "gaze­evoked nystagmus." Despite the fact that the distribution of time constant measurements (c) in normal individuals rarely demonstrated near-perfect stability, researchers found that log10(c) was fairly normally distributed across classes of goal direction (high c values). Scientists have performed statistical estimations and inference on the values of z log10 c to ascertain the influence of the target direction. Eye-drift performance varied significantly between trials among individuals despite statistically significant differences.