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Table 3 Peak velocity (mean and standard deviation) in phenylketonuria patients and in controls

From: Saccadic reaction time and ocular findings in phenylketonuria

Study participantsHorizontal saccadesVertical saccades
PKU all (n = 19)352.11/s (SD 33.48)311.15 °/s (SD 36.67)
 Phenylalanine concentrations within age-related therapeutic ranges (n = 9)353.61°/s (SD 24.42)316.02°/s (SD 42.60)
 Phenylalanine concentrations above age-related therapeutic ranges (*) (n = 10)350.77°/s (SD 39.57)306.77 °/s (SD 33.25)
Controls (n = 99)339.80 °/s (SD 42.32)300.38 °/s (SD 43.28)
  1. (*): 238.4 μmol/l (64%) higher in comparison to the maximal age adjusted reference