2. Anatomy
Eyelid is traditionally described as a bilaminar
structure.
Anterior lamella-skin and orbicularis muscle.
Posterior lamella-tarsal plate, medial and
lateral canthal tendons, capsulapalpebral
fascia, lid retractors and conjunctiva.
3. Skin
Thinnest in the body, measuruing about
0.3mm in some areas.
Surgical incisions within the skin of the eyelid
generally heal with almost imperceptible
scarring.
4. Orbocularis oculi muscles
They lie behind the skin.
Originated from the medial canthus and the
bone of medial orbit and inserted at hte
lateral canthus and lateral orbital rim.
Divided into palpebral & orbital regions
Palpebral region subdivided into pretarsal &
preseptal parts.
Responsible for lid closure
5. Orbital Septum
Fascial membrane which separates the eyelid
structures from the deep orbital structures
Barrier that helps prevent the spread of
hemorrhages, infection, inflammation.
6. Orbital Septum
Upper lid: OS inserts
into the levator
aponeurosis 2-5mm
above the superior
portion of the tarsus.
Lower lid: OS inserts
into the lower edge of
the tarsus
7. Tarsal plate
Thin elongated plates of connective tissue
Contribute to form and support the eyelids
Closely related to the LPS, medial, lateral canthal
structures
Superior tarsus 8-10mm tapering to the sides.
Inferior tarsus 4 mm
The tarsal palte are attached by the medial and
lateral canthal liagament
The meibomian glands are approximately 20 in
each lid within the substance opening in a row of
tiny dots corresponding to the Grey line –
mucocutaneous junction
8. Levator palpebral superioris
Striated muscle (CN III)
Origin: lesser wing of
sphenoid anterior to
the optic foramen
becomes aponeurotic 5-
7mm above the
superior border of the
tarsus and 10-14mm
below the whitnall’s
ligament.
9. Muller’s muscle
Smooth muscle
(sympathetic)
Posterior surface of the
levator muscle & inserts
at superior tarsal border
Horner’s syndrome
10. Conjunctiva
• Mucosal layer adjacent to the surface of the
eye.
• Palpebral portion lines inner surface of eyelid.
• Bulbar portion lines sclera
17. Requirements
Smooth mucous membrane internal lining to
maintain lubrication of the ocular surface and
avoid corneal irritation.
Skeletal support to provide adequate lid rigidity
and shape.
Proper fixation of the medial & lateral canthal
attachments of the lids for eyelid stability &
orientation
Adequate muscle to provide tone & power for
closure.
Adequate levator action to lift the upper lid
above the visual axis.
18. In the reconstruction of both anterior &
posterior lamellae, at least one must have its
own blood supply
Techniques would depend on the size,
location, configuration, & depth of the defect
Superficial defect: only anterior lamella needs
to be repaired
Full thickness defect: needs reconstruction of
both layers
19. Anterior lamella
– Flaps - advancement, transposition, or
rotational musculocutaneous flaps
– Full thickness skin grafts
36. Cutler-Beard (Bridge) Flap
Used for 60% to entire lid defects
Borrows skin, muscle and conjunctiva from
lower eyelid
Autogenous cartilage to provide support
Requires 2nd stage procedure
38. • Advantages
• Total eyelid reconstruction
• Disadvantages
• Two stage
• No lash restoration
• Risk of lower lid ectropion
• Need for tarsal replacement
41. Mustarde flap
(broad shallow full thickness marginal defect of 30-60)
• Advantages
• Lash continuity
• Disadvantages
• Two stage
• May need tenzel flap to
close donar site
46. Conclusion
Thorough understanding of eyelid anatomy
Understand basic techniques of repair
Challenging problem do to complex nature of
eyelid anatomy
Careful attention to detail with delicate
surgical technique required