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Plot of saccadic amplitude versus saccadic peak velocity in sialidosis type 1

A plot of saccadic amplitude versus saccadic peak velocity shows slow horizontal saccades, particularly at larger saccadic amplitudes. (Source: Riboldi GM, Martone J, Rizzo JR, Hudson TE, Rucker JC, Frucht SJ. Looking "cherry red spot myoclonus" in the eyes: clinical phenotype, treatment response, and eye movements in sialidosis type 1. Tremor Other Hyperkinet Mov (NY) 2021;11:53. Creative Commons Attribution 4.0 International License [CC­ BY 4.0].)

Associated Disorders

  • Hydrops fetalis
  • Mental retardation