13th February 2025

A 31-year-old male with a family history of sight loss presents with progressive, gradual worsening of his night vision.

A 31-year-old male with a family history of sight loss presents with progressive, gradual worsening of his night vision. His past medical history includes treatment-resistant schizophrenia, for which he takes clozapine and prochlorperazine. Fundoscopy findings include arterial attenuation, bony spicules and a waxy pale disc. What is the most likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.