Changes in Retinal Nerve Fiber Layer and Macular Ganglion Cell-Inner Plexiform Layer Thickness after Spinal Surgery in the Prone Position
Issued Date
2024-01-01
Resource Type
eISSN
22288082
Scopus ID
2-s2.0-85206699583
Journal Title
Siriraj Medical Journal
Volume
76
Issue
10
Start Page
689
End Page
695
Rights Holder(s)
SCOPUS
Bibliographic Citation
Siriraj Medical Journal Vol.76 No.10 (2024) , 689-695
Suggested Citation
Deeprasertwit T., Bunyaprateepra P.O., Chirapapaisan N., Wilartratsami S., Chonphimai P., Ritthison N., Mukdar Y., Eiamsamarng A. Changes in Retinal Nerve Fiber Layer and Macular Ganglion Cell-Inner Plexiform Layer Thickness after Spinal Surgery in the Prone Position. Siriraj Medical Journal Vol.76 No.10 (2024) , 689-695. 695. doi:10.33192/SMJ.V76I10.268907 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/101745
Title
Changes in Retinal Nerve Fiber Layer and Macular Ganglion Cell-Inner Plexiform Layer Thickness after Spinal Surgery in the Prone Position
Author's Affiliation
Corresponding Author(s)
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Abstract
Objective: Postoperative visual loss resulting from posterior ischemic optic neuropathy (PION) after spinal surgery is rare but devastating. A potential risk factor is prolonged spinal surgery in the prone position. We hypothesized that if this risk factor is linked to PION, the retinal nerve fiber layer (RNFL) and macular ganglion cell-inner plexiform layer (GCIPL) should decrease post-surgery. Materials and Methods: The prospective cohort study was conducted in patients undergoing spinal surgery in the prone position. The RNFL and GCIPL thickness by optical coherence tomography before and after spinal surgery (6-week, 3-month post-operative) were analyzed. Results: Nineteen patients (38 eyes) completed the study with three follow-up timepoints. The mean age was 53.78+/-12.71 years. No significant changes were observed in the RNFL thickness and macular ganglion cell-inner plexiform layer changes at the 6 weeks and 3 months follow-ups, except for the RNFL at the inferior quadrant at 6 weeks follow-up. There were also no patients who experienced visual loss. Conclusion: A transient decrease in RNFL thickness in the inferior quadrant was observed at the 6-week postoperative follow-up after spinal surgery. The prone position during surgery may be an intraoperative factor associated with the development of perioperative PION in patients undergoing spinal procedures.