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Ocular features of NGLY1 deficiency from a prospective longitudinal cohort.

NGLY1 deficiency is a rare autosomal recessive disorder with core features of global developmental delay, liver enzyme abnormalities, movement disorder, polyneuropathy, and hypo- or alacrima. We characterized the full spectrum and evolution of the ocular phenotype in a prospective natural history of NGLY1 deficiency. We collected ophthalmological data on 29 individuals with NGLY1 deficiency in a natural history study. Medical records were reviewed to confirm caregiver-reported symptoms. Of the 29, 15 participants appeared for at least one ophthalmological examination.