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Article History

Received: 3 August 2022

Accepted: 20 December 2022

First Online: 5 January 2023

Declarations

:

: No authors have any conflicts of interest to disclose.

: The parents of this paediatric patient provided verbal and written informed consent to participation.

: The parents of this paediatric patient provided verbal and written informed consent for publication.

: All procedures in this case report involving human studies were in accordance with the ethical standards of the Hospital for Sick Children Research Ethics Board and adhered to the tenets of the Declaration of Helsinki.

: Bilateral compressive optic neuropathy and outer retinopathy due to optic canal hyperostosis in a child with isolated vitamin a deficiency.

: This study did not involve any animals.

: Informed consent (oral and written) was obtained from the parents of the patient described in this case report.