###Rationale: Saccades are sudden, jerky conjugate eye movements that occur as the gaze shifts from one object to another. Supranuclear eye movement systems include : Saccadic system Smooth pursuit system Vergence system Vestibular system Optokinetic sysytem Position maintenance system Ref;A.K.Khurana;6th edition; Page no: 341

###Answer: OPTION D IS CORRECT.
###Question: Which of the following best defines the "Saccade"-
###Options:
A. Voluntary slow eye movements
B. Involuntary slow eye movement
C. Abrupt, involuntary slow eye movements
D. Abrupt, involuntary rapid eye movements
