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Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
Lids and Adnexa Class 2 Part A - Ectropion and Entropion
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Lids and Adnexa Class 2 Part A - Ectropion and Entropion

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www.ophthalclass.blogspot.com has the complete class and MCQs on lids and adnexa for undergraduate medical students. Part A of the second class on lids deals with the palpebral fissure, eyelid …

www.ophthalclass.blogspot.com has the complete class and MCQs on lids and adnexa for undergraduate medical students. Part A of the second class on lids deals with the palpebral fissure, eyelid retractors (levator aponeurosis and Muller’s muscle) and protractors (orbicularis oculi). It discusses the lid to globe apposition, factors responsible for vertical and horizontal tautness of the lids, including the canthal ligaments and tarsus. Horizontal lid laxity leading to entropion and ectropion is explained. A brief outline of management of involutional ectropion and entropion is given.

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Transcript

  • 1. THE EYELID MUSCLES
    How the lids are kept in place
    Dr. Anupama Karanth
    www.ophthalclass.blogspot.com
  • 2. The palpebral fissure
  • 3. What maintains the palpebral fissure?
    The eyelid retractors
    The eyelid protractors
  • 4. Eyelid protractors
  • 5. Eyelid rectractors
  • 6. Upper eyelid retractors
  • 7. Levatoraponeurosis
    Wide insertion into various layers of the lid
    Medial horn – posterior lacrimal crest
    Lateral horn – lateral orbital tubercle
    Anterior portion – skin
    Posterior portion – anterior tarsus
    Superior tarsal muscle – conjunctiva and tarsus
  • 8. Muller’s muscle
    (superior tarsal muscle)
    Posterior part of levator
    2 mm lift to the upper lid
    Insertion to tarsus and conjunctiva
    Sympathetic supply
    Horner’s syndrome – mild ptosis
  • 9. Loss of retractor function
    Blepharoptosis – drooping of upper eyelid
  • 10. Lower eyelid retractors
  • 11. Lower eyelid retractors
    Capsulopalpebral fascia analogous to levatoraponeurosis
    From inferior rectus terminal fibres
    Encircles inferior oblique
    Inserts to inferior conjunctival fornix and inferior tarsal border
    Inferior tarsal muscle
    Poorly developed
    Posterior to capsulopalpebralfascia
  • 12. The lid globe apposition
  • 13. The lid and the globe
    Why do the eyelids not fall
    outwards?
    Why do the eyelids not turn
    inwards?
  • 14. The eyelid in place
    Horizontal
    • TARSUS - CANTHAL LIGAMENTS - BONE
    Vertical
    • ORBITAL SEPTUM - RETRACTORS - TARSUS
  • The lid globe apposition-horizontal
    TARSUS - CANTHAL LIGAMENTS - BONE
    Superior and inferior tarsus
    Medial and lateral canthal ligaments
    Lacrimalcrests and lateral orbital tubercle
  • 15. The lid globe apposition-vertical
    ORBITAL SEPTUM - RETRACTORS - TARSUS
    Orbital septum
    Levatoraponeurosis
    Muller’s muscle
    Tarsus
  • 16. Loss of lid-globe apposition
  • 17. Abnormal lid-globe relations
    Ectropion
    Eversion of eyelid margin
    Entropion
    Rolling inwards of eyelid margin
  • 18. Ectropion - Entropion
  • 19. Horizontal lid laxity
    Ectropion
    Entropion
  • 20. Age related lid laxity
  • 21. Involutionalentropion
  • 22. Managing laxity

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