- Saccule vs Utricle
- "Saccule is Standing" - the saccule processes vertical linear movement (vs the Utricle, which processes horizontal movement)
- Adduction vs Abduction
- ADduction - "adding eyes together" (turn in eyes)
- ABduction - "abduct/take away eyes" (turn out eyes)
- How to remember positive vs negative vertical divergence
- NEGATIVE Vertical Divergence = relative DOWNward rotation of the RIGHT eye - "When you feel NEGATIVE, you feel DOWN RIGHT sad"
- [Positive Vertical Divergence = relative upward rotation of the right eye]
- Extraocular muscle (EOM) functions
- If you can memorize and reproduce this drawing, you can easily remember the function of the EOMs
- Note: the inferior oblique does extorsion (lateral rotation), the superior oblique does intorsion (medial rotation)
- You can remember this by the mnemonic "inferior people extort"
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