[Effectiveness of the "sliding eight" technique for the treatment of upper eyelid ptosis]

This study evaluated the effectiveness and reliability of suspension surgery using the "sliding eight" technique with a polypropylene thread in patients with severe upper eyelid ptosis over a long-term follow-up period.

The study included 107 patients (149 eyelids) with unilateral or bilateral congenital or acquired upper eyelid ptosis with poor or absent levator function (up to 5 mm). All patients underwent surgery using the "sliding eight" technique with a polypropylene thread. Postoperative assessment included MRD1, palpebral folds height, symmetry of these parameters between the two eyes, and the degree of lagophthalmos.

Perfect symmetry of upper eyelid position in both eyes was achieved in 73 (68.2%) patients. In 34 (31.8%) patients, a difference in eyelid position was observed, averaging 1 mm. Asymmetry in the prominence of the palpebral folds was observed in 3 patients with bilateral ptosis. Repeat surgery was required in 11 (10.3%) patients. The mean follow-up period was 23 months.

The "sliding eight" technique provides long-term, stable, and cosmetically favorable outcomes in the treatment of upper eyelid ptosis with poor levator function. The technique leaves virtually no visible traces and preserves eyelid softness throughout the follow-up period, while its atraumatic nature makes it possible to perform repeat surgery without damaging the surrounding tissues.