Group mean values for different parameters of convergence and divergence movements in controls and in patients: (A) latency, (B) gain i.e. movement amplitude/target requirement, (C) mean velocity, i.e. amplitude/duration, (D) amplitude of saccade intrusions during vergence movements, i.e., conjugate components.

<p>Vertical bars indicate standard errors of the means. Asterisks indicate statistically significant differences between patients and controls that occur specifically for convergence