Short-term intra-individual variability in heidelberg retina tomograph II.
We determined the short-term intra-individual variability for each parameter of the Heidelberg Retina Tomograph II (HRT II). Therefore we examined prospectively 20 healthy volunteers 3 times within 2 weeks. The variability was expressed as the coefficient of variation for each parameter. The short-term intra-individual variability in normal subjects was < or = 12% in all but 3 parameters. Rim Area was the least variable parameter (2 +/- 1%). Cup Volume had the highest variability (25 +/- 38%).
Verdonck
N
N
Dept. of Ophthalmology, University Hospital St Rafaël, Capucijnenvoer 33, 3000 Leuven.
Zeyen
T
T
Van Malderen
L
L
Spileers
W
W
D000328:Adult; D003315:Cornea / Q000033:anatomy & histology*; D003941:Diagnostic Techniques, Ophthalmological / Q000592:standards*; D005260:Female; D006801:Humans; D007368:Interferometry; D007429:Intraocular Pressure / Q000502:physiology; D008027:Light; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012016:Reference Values; D012029:Refraction, Ocular / Q000502:physiology*; D015203:Reproducibility of Results; D014054:Tomography / Q000379:methods / Q000592:standards