Frontal Sling and Levator Resection Surgery for Ptosis Due to Third Cranial Nerve Paralysis

Abstract

Objective: To evaluate the effectiveness of levator resection and frontal sling surgery in patients with ptosis due to third cranial nerve (3rd CN) paralysis. Method(s): A total of 16 patients who underwent frontal sling surgery (n=9, group 1) and levator resection (n=7, group 2) during follow-up due to ptosis due to 3rd CN paralysis in the oculoplastic surgery unit of our clinic were included in the study. The surgical procedure, preoperative levator muscle function test, marginal reflex distance 1 (MRD1) and palpebral fissure height (PFH) were recorded during follow-up. The MRD1 and PFH values of the patients in both groups were recorded in the postoperative 1st month and 12th month examinations, and during the last examination. All data were statistically compared between the two groups. Result(s): Seven (43.8%) patients were female and 9 (56.3%) were male. Preoperative mean MRD1 values in group 1 and group 2 were-1.78+/-1.56 mm (-4-0) and-1.29+/-0.76 mm (-2-0), respectively. In groups 1 and 2, both MRD1 and PFH showed a statistically significant increase compared with preoperative measurements (p=0.277). While postoperative success was 88.8% in the 1st month in group 1, it was 55.5% in the 12th month. In group 2, postoperative success rates were 85.7% in the 1st month and 71.4% in the 12th month examinations. In the comparison between the groups, MRD1 and PFH did not differ statistically (p=0.216). Conclusion(s): Although patients with ptosis due to 3rd CN are difficult to treat, they can be effectively and safely treated with frontal sling surgery or levator resection.Copyright © 2023, Galenos Publishing House. All rights reserved.