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Table 4 Vessel density (VD) (Mean ± SD) of optic nerve head region at baseline and 1 day/1 week/1 month after FS-LASIK

From: Microvascular changes in macula and optic nerve head after femtosecond laser-assisted LASIK: an optical coherence tomography angiography study

 

Baseline

(mean ± SD) %

1 day

(mean ± SD) %

1 week

(mean ± SD) %

1 month

(mean ± SD) %

Whole area (4.5*4.5mm2)

49.32 ± 0.34

49.22 ± 0.35

49.17 ± 0.41

49.61 ± 0.33

Inside disc region

58.51 ± 0.52

56.6 ± 0.65

57.09 ± 0.84

58.61 ± 0.67

Peripapillary Region

51.16 ± 0.42

51.91 ± 0.42

51.76 ± 0.43

51.88 ± 0.35

  1. VD at baseline was compared with VD at 1 day/1 week/1 month respectively using the repeated-measures analysis. VD of whole area (F(2.51,95.18) = 0.6, P = 0.588), inside disc region (F(2.32,88) = 5.38, P = 0.08), peripapillary region (F(2.39,90.75) = 1.44, P = 0.24) of ONH did not differ after surgery