Ptosis Repair
Ptosis may be congenital or acquired as a result of paralysis, neurogenic, trauma or aging. Classic signs characterized by drooping of the eyelid with or without lavator disinsertion. SymptomsDrooping of eyelid may be constant or intermittent, or occur with use. In levator dehiscence, the ptosis is constant and worse in downgaze. In neurogenic ptosis, the defect may be at the level of the neuromuscular junction, the third cranial nerve nucleus or peripheral nerve or the sympathetic chain. In myasthenia gravis, the symptoms are variable and aggravated with use. The ptosis is constant without significant variation in patients with a third nerve palsy, Horner’s syndrome, or levator dehiscence. Risk FactorsPrior eyelid surgery, trauma, eye rubbing ManagementDepends on cause. Myasthenia gravis: oral prednisone with or without Mestinon. Always involve a neurologist before initiating therapy. Third nerve palsy: do strabismus surgery prior to considering ptosis repair to avoid symptomatic diplopia that requires patching. Complete third nerve palsy is difficult to manage; observation rather than surgical intervention is wise. Horner’s syndrome: internal conjunctival –Muller’s resection can be effective. PharmacologyNeosynephrine drops can be used pre-operatively to help guide the selection of surgical approach. The posterior (conjunctival-Mueller’s excision) approach is only effective if Neosynephrine results in elevation of the eyelid to normal height.
|
|
|||||||||||||||||||||||||||||||||||||||||||||||





