Changes in Lid Crease Measurements in Levator Advancement for Ptosis

Area of Science:

• Ophthalmology
• Plastic Surgery
• Medical Imaging

Background:

• Previous research focused on marginal reflex distance 1 (MRD-1) in levator advancement for ptosis.
• Eyelid crease measurements have not been extensively studied for perioperative planning in ptosis correction.
• Eyelid crease position is significant for both functional improvement and aesthetic perception.

Purpose of the Study:

• To evaluate changes in eyelid crease measurements following levator advancement surgery.
• To establish numerical correlations for levator advancement in preoperative planning.
• To prevent overcorrection or undercorrection in ptosis repair.

Main Methods:

• Retrospective analysis of 13 patients undergoing levator advancement for ptosis (August 2016 - April 2019).
• Preoperative and postoperative measurements of MRD-1 were recorded for all patients.
• Mid pupil to crease and lateral limbus to crease measurements were analyzed in 8 patients.

Main Results:

• All patients showed increased MRD-1, mid pupil to crease, and lateral limbus to crease measurements postoperatively.
• An average advancement of 4.8 mm resulted in significant improvements in all measured distances.
• No instances of undercorrection or overcorrection were observed, with high patient satisfaction.

Conclusions:

• Marginal reflex distance 1 (MRD-1) is a reliable tool for planning levator advancement.
• This study introduces eyelid crease measurements (mid pupil to crease, lateral limbus to crease) as novel markers.
• These crease measurements offer additional insights into the aesthetic results of levator advancement surgery.