Eyelid Reconstruction

• Neurogenic ptosis includes CN III palsy,
congenital or acquired, and Horner’s cervical
sympathetic nerve palsy
• Myogenic ptosis includes ―involutional‖ or
senile ptosis; acquired muscular dystrophy;
progressive external ophthalmoplegia; and
myasthenia gravis
• Traumatic ptosis varies according to the
location of the injury to the levator muscle or
lid mechanism
• Mechanical ptosis is due to a tumor, cyst, or
enlarged lacrimal gland pushing down the eyelid
• Pseudoptosis refers to the drooping lid skin of
blepharochalasis and to the apparent ptosis seen
in the postenucleation eyelid
• Before proceeding with surgery in the ptosis
patient, it is wise to make a detailed evaluation of
the history and development of the problem
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