Abstract: Objective In this study, we aimed to evaluate the therapeutic effect of the modified Park method double-eyelid operation. Methods Five hundred and sixty-four modified Park method double-eyelid operations were performed from April 2013 to December 2016; 551 of the patients were female and 13 were male. The average age of the patients was 31 years(range, 16 to 46 years). Bilateral modified Park method double-eyelid operations were performed on all the patients, and 162 patients underwent epicanthoplasty as well. In each patient, the margin of the upper eyelids coincided with the pupil, and the levator muscle force was higher than 8 mm. Results Postoperatively, the incision healed at the first stage in 98.9% of the patients and there was only minor tumescence when the stitches were removed at 7 days after the operation. The follow-up duration in all patients ranged from 2 to 25 months. As a result, 94.5% of the patients achieved natural and smooth double eyelids with symmetrical configuration and minor scar. Their incisions healed quickly with tight skin tissue underneath. Conclusion The modified Park method double-eyelid operation results in a short convalescence period, natural double eyelid, higher levator muscle force, lifted upper eyelid, and a favorable effect.

Key words: Modified Park method, Double-eyelid operation, Levator aponeurosis, Orbicularis oculi muscle