Vergence.
Hain
T C
TC
Zee
D S
DS
D003290:Convergence, Ocular / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology; D005403:Fixation, Ocular / Q000502:physiology*; D006801:Humans; D009759:Nystagmus, Pathologic / Q000503:physiopathology