M. Gutierrez Elleny, A. Shaukat Bilal, P. Langford Marlyn, J Brinkley John, A. Byrd William, Delayed Vision Loss Post Assault-Induced Zygomatic Fracture Repair in a Patient with an Ipsilateral Anterior Clinoid Process Pneumatization, A Case Report, Journal of Ophthalmic Science, Volume 3, Issue 1, 2023, Pages 7-12, ISSN 2470-0436, https://doi.org/10.14302/issn.2470-0436.jos-23-4444. (https://oap-onlinejournals.org/ophthalmic-science/article/delayed-vision-loss-post-assault-induced-zygomatic-fracture-repair-in-a-patient-with-an-ipsilateral-anterior-clinoid-process-pneumatization-1931) Abstract: A 27-year-old male presented one week after surgical repair of his fractured left zygomatic arch, 5 weeks post-assault, complaining of persistent blurred vision in the left eye and worsening migraine headaches. Magnetic resonance images (MRI) revealed no intra-orbital pathologies or optic neuropathy but demonstrated a clearly delineated air-filled space of the left anterior clinoid process (ACP). No vision threatening pathologies were identified and surgical treatment was not recommended. His blurred vision remained at 6-month follow up. We report a case of delayed vision loss and headache post zygomatic fracture repair surgery in patient with a confirmed ipsilateral ACP pneumatization. Keywords: air-filled cavity; radiolucent defect; MRI; facial fracture; assault.