Bassett Collection Large Image - Lane Medical Library, Stanford University Medical Center

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Dissection of left orbit from an anterior approach

Orbicularis oculi muscle; superficial nerves and blood vessels

The skin and subcutaneous tissue have been removed except for a narrow margin retained at the edges of the eyelids.

1 .	Ascending branches of supratrochlear nerve
2 .	Ascending branches of dorsal nasal artery
3 .	Frontalis muscle
4 .	Ascending branches of infratrochlear nerve
5 .	Descending branches of infratrochlear nerve
6 .	Procerus muscle
7 .	Medial palpebral ligament
8 .	Angular artery
9 .	Transverse part of nasalis muscle
10 .	Angular head of levator Iabii superioris muscle
11 .	Nasal branch of angular artery
12 .	Corrugator supercilii muscle (insertion cut off by removal of skin of eyebrow)
13 .	Branch supraorbital nerve
14 .	Temporal branch facial nerve
15 .	Orbital part orbicularis oculi muscle
16 .	Palpebral part of orbicularis oculi muscle
17 .	Skin supporting lashes at lid margin
18 .	Lateral palpebral raphe (ligament)
19 .	Zygomaticofacial branch of zygomatic nerve
20 .	Inferior palpebral branch of infraorbital nerve