This case report describes the anatomical presentation of the anomalous optic nerve (cranial nerve II). Cranial nerve II developmental anomalies encompass both optic nerve hypoplasia and aplasia. While most studies on optic nerve anomalies rely on radiological imaging, anatomical presentation and nerve course are rarely described. The current case reveals a complete absence of the right optic nerve and its connection to the optic chiasma, resembling radiological presentation of optic nerve aplasia. In addition, the right-sided bony orbit and eyeball were smaller than the left, accompanied by a poorly developed cornea and iris with a calcified mass, resembling clinical presentation of microphthalmia. Having a thorough understanding of the gross anatomical presentation and course of optic nerve anomalies can facilitate precise diagnosis and management of visual impairments associated with these anomalies. Furthermore, such knowledge can provide valuable insights into the actual prevalence of optic nerve aplasia and further substantiate the literature.
Unilateral optic nerve aplasia associated with microphthalmia: a rare cadaveric report
Arthur T. Manjatika1,2, Joshua G. Davimes1, Erin F. Hutchinson1, Amadi O. Ihunwo1
1 School of Anatomical Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
2 School of Life Sciences and Allied Health Professions, Anatomy Division, Kamuzu University of Health Sciences, Blantyre, Malawi
SUMMARY
Eur. J. Anat.
, 28
(4):
505-
509
(2024)
ISSN 2340-311X (Online)
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