Article

This study measured spatial bisection acuity for horizontally and vertically
separated line targets in five observers with infantile nystagmus syndrome (INS)
and no obvious associated sensory abnormalities, and in two normal observers
during comparable horizontal retinal image motion. For small spatial separations
between the line targets, bisection acuity for both horizontally and vertically
separated lines is worse in the observers with IN than normal observers. In four
of the five observers with IN, bisection acuity for small target separations is
poorer for horizontally compared to vertically separated lines. Because the
motion smear generated by the retinal image motion during IN would be expected to
influence horizontally separated targets, the degradation of bisection acuity for
both vertical and horizontally separated lines indicates that a sensory neural
deficit contributes to impaired visual functioning in observers with idiopathic
IN.
CI - Copyright (c) 2012 Elsevier Ltd. All rights reserved.

Langue : ANGLAIS

Tiré à part : OUI