Eyelid Anatomy - Entropion / Ectropion

Eyelid Anatomy - Entropion / Ectropion
Elizabeth J. Rosen, MD
Karen H. Calhoun, MD

Entropion is a medical condition in which the eyelids fold inward. Ectropion is a medical condition in which the lower eyelid turns outwards

Eyelid Anatomy
* Tarsal plates
o Length 25mm
o Thickness 1mm
o Height
+ Upper 10mm
+ Lower 4mm
* Orbicularis Oculi
o Orbital
o Palpebral
+ Preseptal
+ Pretarsal
* Medial canthal tendon
o Anterior reflection
o Posterior reflection
o Vertical fascial support
* Lateral canthal tendon
* Lateral retinaculum
* Orbital septum
o Origin
+ Arcus marginalis
o Insertion
+ Medial: posterior lacrimal crest
+ Lateral: orbital tubercle
+ Superior: levator aponeurosis
+ Inferior: inferior tarsal border
* Upper lid levators
o Levator palpebrae superioris
o Whitnall’s ligament
o Muller’s muscle
* Lower lid retractors
o Capsulopalpebral fascia
o Lockwood’s ligament
o Inferior palpebral muscle
* Lacrimal apparatus
o Gland
o Punctum
o Canaliculus
o Sac
o Duct

Entropion
* Congenital
* Involutional (senile)
* Cicatricial
* Congenital Entropion
* Epiblepharon
* Correction of congenital entropion or epiblepharon
* Correction of involutional entropion
* Correction of cicatricial entropion
* Correction of cicatricial entropion
Ectropion
* Congenital
* Paralytic
* Cicatricial
* Involutional

Ectropion
* Paralytic ectropion
* Correction of paralytic ectropion
* Correction of cicatricial ectropion
* Correction of involutional ectropion

Entropion / Ectropion.ppt