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Comparison of the current and a new RTVue OCT software version for detection of ganglion cell complex changes due to cataract surgery

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Abstract

The purpose was to compare the current (6.3) and a novel software version (6.12) of the RTVue-100 optical coherence tomograph (RTVue OCT) for ganglion cell complex (GCC) and retinal nerve fibre layer thickness (RNFLT) changes after phacoemulsification in healthy cataract eyes, and to investigate whether version 6.12, in which image segmentation is improved, provides benefits over version 6.3 for RNFLT and GCC imaging via mild cataract. One eye of 22 consecutive healthy cataract patients were imaged before and 1 month after uncomplicated cataract surgery using RTVue-100 OCT software version 6.3. The images were analysed with both software versions. Signal strength index increased significantly after surgery for both RNFLT and the GCC measurements (p ≤ 0.0015). No difference was seen for any RNFLT parameter between the software versions and time points (p ≥ 0.0140). The GCC values did not differ between the versions either before or after surgery (p ≥ 0.4471), but all increased significantly after surgery with software version 6.12 (p < 0.0001). Neither focal loss volume (FLV) nor global loss volume (GLV) differed between the software versions before and after surgery, respectively, but GLV decreased (improved) significantly after surgery (p = 0.010 and <0.001 for versions 6.3 and 6.12, respectively). Cataract surgery induced similar changes with both software versions, but version 6.12 identified the increase of GCC thickness and the decrease of GLV better than the current version. Although no significant difference between software versions was seen before surgery, our results suggest that version 6.12 may be more precise in measuring GCC parameters than the currently available version.

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Acknowledgments

The authors thank Péter Vargha for the statistical analysis, and Miklós Resch for patient recruitment to the study.

Conflict of interest

Gábor Holló is an unpaid consultant of Optovue, Inc. and Carl Zeiss Meditec, Inc. The other authors declare no conflict of interests.

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Holló, G., Naghizadeh, F., Hsu, S. et al. Comparison of the current and a new RTVue OCT software version for detection of ganglion cell complex changes due to cataract surgery. Int Ophthalmol 35, 861–867 (2015). https://doi.org/10.1007/s10792-015-0064-8

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  • DOI: https://doi.org/10.1007/s10792-015-0064-8

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