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F. Matonti, L. Hoffart, G. Alessi, M. Catanese, C. Baeteman, B. Ridings, J. Conrath; Comparison of Macular Retinal Thickness Measurements by Optical Coherence Tomography With the Stratus® and Cirrus® Oct. Invest. Ophthalmol. Vis. Sci. 2008;49(13):4251.
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© ARVO (1962-2015); The Authors (2016-present)
To compare the values of one millimetre central retinal thickness measured by the Stratus® OCT (OCT3) and the Cirrus® OCT (OCT4).
51 eyes (28 healthy eyes and 23 pathological) were examined in 30 patients (15 men and 15 women). In 23 pathological eyes 11 presented diabetic macular oedema and 12 presented other affections (neovascular age-related macular degeneration, toxoplasmosis and epiretinal membrane). In each eye, mean retinal thickness was measured for central one millimetre by the "macular thickness" protocol. We verified the reliability of these data and then they were compared by the student T-Test.
Average patient age was 50.7 years (+/- 19.6 SD). In the healthy eye group, average retinal thickness was 209.2 µm (+/- 24.2 SD) with OCT3 and 262.5 µm (+/- 29.1 SD) with OCT4: the difference between means was 53.3µm (20.3%) (p<0,05). In the pathological eye group the values were 357.2 µm (+/- 112 SD) with OCT3 and 387.6 µm (+/- 89.4 SD) with OCT4: the difference between means was 30.4 µm (7.84%) (p<0.05).With Stratus® OCT retinal thickness values were significantly lower than with Cirrus® OCT. We observed more artefacts with OCT3 than OCT4, essentially in pathological eyes.
The one millimetre central retinal thickness values measured with Cirrus® OCT was significantly higher than those measured with Stratus® OCT. Additionally Cirrus® OCT product less artefacts comparing the Stratus® OCT especially in pathological cases.
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