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Eye Movement

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Eye Movement

  1. 1. EPICANTHUS-TELECANTHUS-HYPERTELORISM Telecanthus is often associated with many congenital disorders such as Down syndrome, fetal alcohol syndrome, Cri du Chat syndrome, Klinefelter syndrome, Turner syndrome, Ehlers-Danlos syndrome
  2. 2. THE BONEY ORBIT AND EYE ALIGNMENT
  3. 3. ORBITAL ANATOMY
  4. 4. EXTRAOCULAR MUSCLES AND THEIR FUNCTION Medial rectus -adduction Lateral rectus -abduction Superior rectus-elevation, adduction, & intortion Inferior rectus-depression, adduction, & extortion Superior oblique –depression, abduction, & intortion Inferior oblique-elevation, abduction, & extortion
  5. 5. SIN IS RADICAL: MNEUMONICS CAN BE FUN • The vertical recti and the oblique muscles are also called cyclo-vertical muscles. • Both superior cyclovertical muscles are intorters and inferior cyclovertical muscles are extorters • SIN= superior muscles are intorters • vertical actions are opposite; the superior oblique is a depressor and the inferior oblique is an elevator. • RAD=Recti are ADductors • The RAD mnemonic is useful to recollect that Recti are ADductors but • best efficient and tested in abducted position • it is vice-versa for the oblique muscles
  6. 6. MESIAL RECTUS
  7. 7. LATERAL RECTUS
  8. 8. SUPERIOR RECTUS
  9. 9. INFERIOR RECTUS
  10. 10. SUPERIOR OBLIQUE
  11. 11. INFERIOR OBLIQUE
  12. 12. RIGHT EYE MOVEMENTS
  13. 13. CONVERGENCE
  14. 14. CONVERGENCE AND ACCOMMODATION • Convergence • Bilateral mesial rectus contraction • Pupillary Constriction • Lens Accommodation • Ciliary muscles contract to decrease tension on the zonules
  15. 15. MADDOX RED ROD

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