Eyelids
Orbital septum
Deep to orbicularis oculi
Attachment
- upper eyelid: tendon of levator palpebrae superioris muscle
- lower eyelid: tarsus
Clinical relevance: spread of orbital cellulitis
eyelid movements
- orbicularis oculi - CN7 zygomatic branch
- Action: closes eyelids
eyelid structure
- superior and inferior tarsus
innervation
- Sensory: CN5
| Upper | Lower |
|---|---|
| - Supratrochlear - Infratrochlear - Lacrimal - Supraorbital |
- Infratrochlear - Infraorbital - zygomaticofacial |
- Motor:
- CN7, CN3 (levator palpebrae superioris)
- sympathetic fibres from superior cervical ganglion (superior tarsal muscle)