Meronk Eyelid Plastic Surgery


External Anatomy of the Eyelids and Eye




A Medial Commissure Inner corner where eyelids join
B Lateral Commissure Outer corner where eyelids join
C Medial Canthus Tissues just beyond medial commissure
D Lateral Canthus Tissues just beyond lateral commissure
E Upper Eyelid Crease Indentation or fold in upper eyelid
F Lower Eyelid Margin Edge of eyelid
G Nasojugal Fold Indentation extending from lid down along nose
H Sclera White layer of eyeball
I Iris Colored layer inside of eyeball
J Pupil Hole in iris that lets in light
K Palpebral Fissure (Not labeled) Opening between the eyelids

The Eyelid and Facial Muscles




A Orbicularis Muscle (palpebral portion) Eyelid closing muscle
B Orbicularis Muscle (orbital portion) Eyelid closing muscle
C Frontalis Muscle Forehead muscle
D Procerus Muscle Muscle that lowers brows
E Corrugator Muscle Muscle that brings brows together
F Midfacial Muscles Muscles of the cheek
G Malar Fat Pad Large cheek fat pad
H Suborbicularis Fat (SOOF) Fat pad beneath orbicularis muscle
I Temporalis Muscle and Fascia Muscle of temple

The Orbital Septum (Muscles Removed) 


A Orbital Septum Layer holding back orbital fat
B Levator Aponeurosis Eyelid muscle tendon seen through septum

Deeper Eyelid and Orbital Anatomy (Septum Removed)


A Medial Canthal Tendon Tendon anchoring lids to bone
B Lateral Canthal Tendon Tendon anchoring lids to bone
C Upper Tarsus (Tarsal Plate) Stiffening element (like cartilage)
D Lower Tarsus (Tarsal Plate) Stiffening element (like cartilage)
E Levator Muscle (cut off at tendon) Main opening muscle of upper lid
F Superior Oblique Tendon Tendon of muscle moving eyeball
G Inferior Oblique Muscle Muscle moving eyeball
H Lacrimal Gland (Tear Gland) Gland that produces watery tears
I Lacrimal Sac (Tear Sac) Part of tear drainage system
J Fat Orbital fat extending into eyelids
K Orbital Rim Rim of socket bone

The Lower Eyelid in Cross-Section



A Eyeball
B Skin Epidermis on surface, dermis below
C Orbicularis Muscle Eyelid closing muscle
D Tarsus (Tarsal Plate) Stiffening element (like cartilage)
E Orbital Septum Layer holding back the orbital fat
F Orbital Fat Fat from the socket extending into lid
G Inferior Oblique Muscle Muscle moving the eyeball
H Lower Eyelid Retractors Structures that move the lid downward
I Orbital Bone Bone surrounding the eye; socket
J Conjunctiva Lining of the back of eyelid and front of eye
K Periosteum Lining of the bone (called 'periorbita' in orbit)

The Upper Eyelid in Cross-Section


Narrated Overview of Eyelid Anatomy

Atlas of Eyelid and Facial Anatomy