In her insightful commentary, Dr Salaud raises important points regarding the vascularization patterns of the optic chiasm (OCh) and their potential role in visual field defects associated with suprasellar lesions. Dr Salaud's comprehensive dissection of 13 different formalinfixed anatomic specimens and her investigation into the extrinsic and intrinsic vascularization of the OCh provide valuable insights that complement our findings. [2][3][4] One notable aspect of Dr Salaud's study is the objective assessment of the intrinsic vascularization of the OCh through the use of 3 microscanners on barium sulfateinjected OCh. 1 This approach enhances the understanding of the intrinsic networks, particularly the lateral and central intrinsic networks, providing a more detailed perspective on the blood supply to the OCh. The identification of capillary networks and their distribution in the lateral and central portions of the OCh enriches our understanding of the intricate vascular anatomy in this region.Our paper highlighted the involvement of the anterior communicating artery and the first segment of the anterior cerebral artery in vascularizing the superior surface of the OCh. 2 Dr Salaud's work adds depth to this understanding by emphasizing the role of the superior hypophyseal artery in vascularizing the anterosuperior part of the OCh. Additionally, her observations regarding the inferior surface's vascularization by the superior hypophyseal artery and the posterior communicating artery contribute valuable nuances to the discussion. 1 Furthermore, the identification of intrinsic networks and their detailed description, including the lateral intrinsic network extending into the lateral portions of the OCh and the optic tract, enhances our comprehension of the microvasculature supplying the OCh. 1 The convergence of capillaries from the left and right sides toward the center of the OCh underscores the complexity of the intrinsic vascularization and its potential implications for visual function.We concur with Dr Salaud regarding the dual responsibility of arterial and direct nerve compression in visual deficits associated with inferior compression of the OCh. 1,2 We acknowledge the relevance of the posterior communicating artery in the vascular supply to the inferior surface of the OCh, providing additional insights into the intricate network of vessels contributing to the blood supply in this region. 1,2 In conclusion, Dr Salaud's commentary significantly contributes to the ongoing discussion on the vascularization patterns of the OCh and their implications for visual function in the context of suprasellar lesions. This aligns with our recommendations for surgeons to exercise caution and respect these arteries to prevent adverse visual outcomes. 2 We deeply appreciate the interest in our paper and the opportunity for discussion.
Ethical ApprovalApproval was granted by Mayo Clinic Institutional Review Board (17-005898). All human cadaveric studies have been performed in accordance with the ethical standards laid down i...
