| 1
.
| Frontalis muscle |
| 2
.
| Corrugator supercilii muscle |
| 3
.
| Supratrochlear nerve |
| 4
.
| Infratrochlear nerve |
| 5
.
| Orbicularis oculi muscle (divided and partially removed) |
| 6
.
| Medial palpebral artery (note branch which passes superiorly to communicate with supraorbital artery) |
| 7
.
| Cut end of lacrimal part orbicularis oculi muscle (superior portion of Horner's muscle) |
| 8
.
| Medial palpebral ligament |
| 9
.
| Nasal bone (covered by periosteum) |
| 10
.
| External nasal branch anterior ethmoidal nerve |
| 11
.
| Angular artery and vein |
| 12
.
| Frontalis muscle |
| 13
.
| Branch supraorbital nerve (communicates in part with temporal branch of facial nerve) |
| 14
.
| Frontal nerve (note contribution to palpebral nerves) |
| 15
.
| Supraorbital margin of orbit (periosteum intact) |
| 16
.
| Orbital septum |
| 17
.
| Superior palpebral branches of frontal, supratrochlear, and infratrochlear nerves |
| 18
.
| Layer of fat beneath orbicularis oculi muscle |
| 19
.
| Aponeurosis of levator palpebrae superioris muscle |
| 20
.
| Superior tarsus |
| 21
.
| Lacrimal nerve |
