What it means for a patient
- A droopy upper lid that develops later in life (acquired ptosis) can come from a defect in the sheet that lifts the lid. This operation repairs that sheet.
- The repair is designed to leave the tear-producing tissue and the other eyelid structures in place.
- The authors set the lid higher than the goal at the time of surgery in every case.
- A lid that drooped from birth (congenital ptosis) was also treated when the lifting muscle still had at least 5 mm of movement.
- Limits: one team's technique and results in 60 eyelids. The abstract gives no outcome numbers.
Why this paper matters
It described aponeurotic ptosis surgery that preserves Müller's muscle, Whitnall's ligament and the tear structures, and it set overcorrection at surgery as a rule.
Overview
Ptosis is a drooping upper eyelid. The levator aponeurosis is the tendon-like sheet that lifts the lid, and recognition of defects in it, along with new interest in eyelid anatomy, revived surgery on the aponeurosis. The authors describe their approach, with emphasis on techniques that keep the dissection in bloodless (avascular) tissue planes throughout the operation.
Findings
- The technique aims to obtain and keep avascular planes throughout surgery.
- Structures preserved: the tear-producing structures, Müller's muscle, Whitnall's ligament, and the normal anatomical planes and structures of the eyelid.
- The authors consider it the procedure of choice for acquired ptosis.
- It also gave good results in congenital ptosis with at least 5 mm of levator function.
- Overcorrection at surgery is necessary in all cases.
- Tucking the aponeurosis should be avoided, because tucking creates no raw healing surfaces.
- Results are presented for 60 eyelids with a minimum follow-up of 1 year.
- The abstract does not give success rates or complication rates.
Terms
- Ptosis: a drooping upper eyelid.
- Levator aponeurosis: the thin, tendon-like sheet that connects the lid-lifting muscle to the eyelid.
- Acquired ptosis: eyelid droop that develops during life.
- Congenital ptosis: eyelid droop present from birth.
- Levator function: how far the upper lid moves from looking down to looking up, measured in millimeters.
- Müller's muscle: a small muscle under the levator that helps hold the lid open.
- Whitnall's ligament: a band of tissue in the upper eyelid that supports the lifting muscle.
- Avascular plane: a layer between tissues with few blood vessels, where dissection causes little bleeding.
- Overcorrection: setting the eyelid higher than the final goal at the time of surgery.