Optic canal dimensions in a Nigerian cohort: Implications for neurosurgery and radiology

Abstract

Background: The variant morphometry of the optic canal is important to neurosurgeons, radiologists and ophthalmologists in the diagnosis and management of skull base and intracanalicular lesions. Aim and Objectives: This study delved into the anatomical details of the optic canal morphometry, emphasizing its importance in neurosurgical and radiological practices. Materials and methods: Utilizing Computed Tomography (CT) images from a Nigerian Teaching Hospital, we retrospectively assessed the dimensions of the optic canal in 300 adult patients (160 males and 140 females). Rigorous ethical clearance was obtained, and image analysis included measurements of height, width, length of medial and lateral walls, and aperture diameters. Statistical analyses were conducted using SPSS software, examining variations based on age, gender, and side. Results: The left canal demonstrated a wider width, while the right exhibited a longer lateral wall (p < 0.05). Gender differences were noted in orbital and cranial aperture sizes. Agegroup comparisons revealed significant differences in wall lengths and aperture diameters. The optic canal dimensions showed weak positive correlations with age (p < 0.05). Conclusion: This study contributes vital CT measurements of the optic canal, serving as a foundational reference for ophthalmologists, neurosurgeons, and radiologists. The population-specific findings emphasize the optic canal's significance in clinical practice, particularly in the context of surgical interventions and diagnostic precision.

Keywords

• optic canal
• dimensions
• surgery
• computed tomography