Table 4 Proportion of subjects with type 1 diabetes mellitus showing functional or morphological values outside normal limits (sensitivity)
ParameterSensitivity (%)
HFA MD60
HFA PSD50
Matrix MD73.3
Matrix PSD43.3
GDx TSNIT70
Superior average56.7
Inferior average43.3
TSNIT SD33.3
NFI score20

  • GDx, scanning laser polarimetry; HFA, Humphrey field analyser; MD, mean deviation; NFI, nerve fibre indicator; PSD, pattern standard deviation; TSNIT, temporal-superior-nasal-infero-thickness.