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External Anatomy of the Eyelids and Eye
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| A
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Medial Commissure
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Inner corner where eyelids join
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| B
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Lateral Commissure
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Outer corner where eyelids join
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| C
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Medial Canthus
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Tissues just beyond medial commissure
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| D
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Lateral Canthus
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Tissues just beyond lateral commissure
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| E
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Upper Eyelid Crease
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Indentation or fold in upper eyelid
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| F
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Lower Eyelid Margin
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Edge of eyelid
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| G
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Nasojugal Fold
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Indentation extending from lid down along nose
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| H
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Sclera
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White layer of eyeball
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| I
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Iris
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Colored layer inside of eyeball
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| J
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Pupil
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Hole in iris that lets in light
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| K
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Palpebral Fissure
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(Not labeled) Opening between the eyelids
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The Eyelid and Facial Muscles
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| A
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Orbicularis Muscle (palpebral portion)
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Eyelid closing muscle
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| B
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Orbicularis Muscle (orbital portion)
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Eyelid closing muscle
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| C
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Frontalis Muscle
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Forehead muscle
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| D
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Procerus Muscle
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Muscle that lowers brows
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| E
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Corrugator Muscle
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Muscle that brings brows together
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| F
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Midfacial Muscles
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Muscles of the cheek
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| G
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Malar Fat Pad
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Large cheek fat pad
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| H
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Suborbicularis Fat (SOOF)
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Fat pad beneath orbicularis muscle
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| I
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Temporalis Muscle and Fascia
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Muscle of temple
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The Orbital Septum (Muscles Removed)
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| A
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Orbital Septum
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Layer holding back orbital fat
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| B
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Levator Aponeurosis
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Eyelid muscle tendon seen through septum
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Deeper Eyelid and Orbital Anatomy (Septum Removed)
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| A
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Medial Canthal Tendon
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Tendon anchoring lids to bone
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| B
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Lateral Canthal Tendon
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Tendon anchoring lids to bone
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| C
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Upper Tarsus (Tarsal Plate)
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Stiffening element (like cartilage)
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| D
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Lower Tarsus (Tarsal Plate)
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Stiffening element (like cartilage)
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| E
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Levator Muscle (cut off at tendon)
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Main opening muscle of upper lid
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| F
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Superior Oblique Tendon
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Tendon of muscle moving eyeball
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| G
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Inferior Oblique Muscle
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Muscle moving eyeball
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| H
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Lacrimal Gland (Tear Gland)
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Gland that produces watery tears
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| I
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Lacrimal Sac (Tear Sac)
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Part of tear drainage system
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| J
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Fat
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Orbital fat extending into eyelids
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| K
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Orbital Rim
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Rim of socket bone
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The Lower Eyelid in Cross-Section
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| A
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Eyeball
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| B
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Skin
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Epidermis on surface, dermis below
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| C
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Orbicularis Muscle
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Eyelid closing muscle
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| D
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Tarsus (Tarsal Plate)
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Stiffening element (like cartilage)
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| E
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Orbital Septum
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Layer holding back the orbital fat
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| F
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Orbital Fat
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Fat from the socket extending into lid
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| G
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Inferior Oblique Muscle
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Muscle moving the eyeball
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| H
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Lower Eyelid Retractors
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Structures that move the lid downward
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| I
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Orbital Bone
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Bone surrounding the eye; socket
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| J
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Conjunctiva
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Lining of the back of eyelid and front of eye
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| K
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Periosteum
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Lining of the bone (called 'periorbita' in orbit)
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The Upper Eyelid in Cross-Section
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Narrated Overview of Eyelid Anatomy
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