Yoke muscles are pairs of muscles (one in each eye) that work together to produce coordinated eye movements.
Type of Movement |
Yoke Muscle Pair |
Function |
Right Gaze |
Right Lateral Rectus (RLR) |
Horizontal movement |
Left Gaze |
Right Medial Rectus (RMR) |
Horizontal movement |
Right Upward Gaze |
Right Superior Rectus (RSR) |
Elevation and rightward |
Left Upward Gaze |
Right Inferior Oblique (RIO) |
Elevation and leftward |
Right Downward Gaze |
Right Inferior Rectus (RIR) |
Depression and rightward |
Left Downward Gaze |
Right Superior Oblique (RSO) |
Depression and leftward |