First Author: S.Ishimaru JAPAN
Co Author(s): N. Goto K. Tiba T. Senoo
Purpose:
The thickness of femtosecond laser (FS)-dissected grafts was compared with that of microkeratome (KT)-dissected grafts in patients who underwent DescemetÂ’s stripping automated endothelial keratoplasty (DSAEK).
Setting:
This study was performed at Dokkyo Medical University Hospital in Tochigi Prefecture, Japan.
Methods:
Ten eyes of ten patients who underwent DSAEK at our hospital were examined. None of the patients had undergone previous keratoplasty. Five patients received a FS-dissected graft, and the remaining five received a KT-dissected graft. Thickness measurement was performed after the grafts had stabilized. A KT and a FS laser were used to dissect corneal grafts to intended depths of 350 ?m and 400 ?m, respectively. Horizontal and vertical anterior segment optical coherence tomography scans were performed to measure the thickness of the peripheral, intermediate peripheral, and intermediate zones.
Results:
The respective average thickness of the peripheral, intermediate peripheral, and intermediate zones was 283.1 ± 60.5 ?m, 205.9 ± 52.5 ?m, and 192.8 ± 50.5 ?m for KT-dissected grafts and 275.3 ± 29.2 ?m, 217.4 ± 21.4 ?m, and 204.1 ± 26.2 ?m for FS-dissected grafts. Differences in thickness between the graft groups were not statistically significant. The average CV was 0.24 for KT-dissected grafts and 0.20 for FS-dissected grafts.
Conclusions:
The average thickness of the peripheral zone (four measurement points), intermediate peripheral zone (four measurement points), and intermediate zone (two measurement points) was compared between the FS- and KT-dissected grafts. Then, thickness was measured at five positions on each horizontal and vertical scan (10 measurements/case), and coefficient of variation (CV) values were compared between the graft groups. FINANCIAL DISCLOSURE?: No
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