The importance of simultaneous oculoplastic surgery in quality of life related to vision in surgical resection of large vestibular schwannomas.

Objectives: Facial nerve palsy is one of the most important complications of vestibular schwannoma resection. When VII cranial nerve is damaged, ocular complications might appear, impacting patient´s quality of life. Therefore, standardized eye care must be a priority. This involves three key treatments: topical treatment, rehabilitation and oculoplastic surgery. The aim of this work is to review the results of oculoplastic surgery performed simultaneously with vestibular schwannoma resection in terms of vision-related quality of life, compared to deferred surgery.

Design: The study involved 177 patients who underwent vestibular schwannoma resection between 2015 and 2022. The incidence of facial palsy was registered. Of those patients who had the palsy, we selected 35 who also had oculoplastic surgery. 5 of them declined participating in the study. The final sample (n = 30) was divided in two groups depending on the timing of oculoplastic surgery: simultaneously- first group (n = 15) and deferred-second group (n = 15). The vision-related quality of life was measured using the NEI VFQ-25 test.

Results: 26.56% patients developed an immediate postoperative facial dysfunction, decreasing to 18.08% after one year of follow-up. Timing of oculoplastic surgery was associated with better results in quality of life; the first group of patients had a better quality of life (70.27/100) compared to the second group (53.73/100; p = 0.006). Moreover, worse results in quality of life were also associated with long-term postoperative facial palsy (p = 0.042). Current criteria for selecting patients were reliable, proving adequacy as we found worse long-term facial functions in patients who underwent simultaneous surgery (p = 0.01).

Conclusions: Our current criteria for selecting candidates for simultaneous oculoplastic surgery are effective. When long-term facial nerve dysfunction is expected during vestibular schwannoma resection, oculoplastic surgery should be performed simultaneously to preserve the q vision-related quality of life. Long-term severe facial palsy is associated with poor vision-related quality of life.