Altered Vergence Eye Movements and Pupil Response of Patients with Alzheimer's Disease and Mild Cognitive Impairment During an Oddball Task.

Background: Alzheimer's disease (AD) is characterized by progressive deterioration of cognitive functions and may be preceded by mild cognitive impairment (MCI). Evidence shows changes in pupil and vergence responses related to cognitive processing of visual information.

Objective: Here we test the hypothesis that MCI and AD are associated with specific patterns in vergence and pupil responses.

Eye vergence responses in children with and without reading difficulties during a word detection task.

Vergence eye movements are movements of both eyes in opposite directions. Vergence is known to have a role in binocular vision. However recent studies link vergence eye movements also to attention and attention disorders.

Eye Vergence Responses During an Attention Task in Adults With ADHD and Clinical Controls.

ADHD patients show poor oculomotor control and recent studies show that attention-related eye vergence is weak in ADHD children. We aimed to assess vergence as a potential diagnostic biomarker for ADHD in adults. We assessed the modulation in the angle of vergence while performing an attention task ( = 144), comparing the results for adults previously diagnosed with ADHD ( = 108) with age-matched clinical controls ( = 36).