First Author: S.Gedik TURKEY
Co Author(s): R. Dilek B. Turgut Ozturk S. Gonul B. Bakbak S. Okudan
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To compare the results of two commonly used devices swept source/fourier domain optical coherence tomography (OCT) (DRI-OCT1 Atlantis system, Topcon) and spectral domain optical coherence tomography (Spectralis, Heidelberg Engineering) in patients with diabetic macular edema.
Fifty patients with clinically significant diabetic macular edema have been enrolled into the study. Patients were examined with both devices by the same experienced operator consequetively. The measurements were performed for 9 macular regions (central, inner and outer superior, inferior, temporal and nasal regions). The statictical analyses were performed with Wilcoxan paired t test using SPSS software (Version 15, SPSS Inc. Chicago, IL) and the p value < 0.05 was considered as statistically significant.
Mean central macular thickness was measured as 432.6µm and 362.9 µm with Spectral domain OCT and Swept source OCT, respectively. This difference was found as statistically significant ( p < 0.001). Similarly , all the other measurements taken with spectral domain OCT values were higher with spectral domain OCT than Swept-source OCT and all the differences for 8 different regions were statistically different (p < 0.001).
Spectral domain OCT measures the macular thickness higher than swept-source OCT in patients with diabetic macular edema. Although both devices are very precise they can not be used as interchangeably.