ABSTRACT
The study deales with some properties of the dynamics of vergence and accommodation during the first second after step change of the fixation target’s distance. We analyze two phenomena: saccadic contributions to vergence reactions and undulation of accommodation plots. The typology of reactions to the approaching of the fixation target in both refractive, and non-refractive accommodative ET were nearly similar to comparable reactions in the controls. ET was related to the significant reduction of purely vergent reactions to the removal of the fixation target. In patients with higher values of non-refractive component (esodeviation higher at near than at distance fixation) of accommodative esotropia, the higher values of refractive power instability (undulation of accommodation plots) were documented.
