Table 3 Factors associated with the percent changes in deep vessel density (VD) (N = 31).

From: Changes in the deep vasculature assessed using anterior segment OCT angiography following trabecular meshwork targeted minimally invasive glaucoma surgery

 

Univariate analysis

Multivariate analysis*

B (95% CI)

β

P

B (95% CI)

β

P

Percent changes in intraocular pressure (IOP), per 1%

1.230 (− 0.305, 2.765)

0.291

0.11

2.839 (1.320, 4.358)

0.672

 < 0.001

Preoperative superficial VD, per 1%

0.060 (0.017, 0.104)

0.465

0.008

  

NS

Preoperative deep VD, per 1%

 − 0.069 (− 0.116, − 0.021)

 − 0.482

0.006

− 0.092 (− 0.134, − 0.050)

 − 0.647

 < 0.001

Combined with cataract surgery (vs. single)

 − 0.122 (− 0.483, 0.240)

 − 0.127

0.50

  

NS

Preoperative IOP, per 1 mmHg

0.000 (− 0.052, 0.052)

0.0002

 > 0.99

0.070 (0.021, 0.120)

0.515

0.007

Preoperative anti-glaucoma eye drops, no

0.077 (− 0.339, 0.493)

0.070

0.71

  

NS

Axial length, per 1 mm

0.096 (− 0.129, 0.321)

0.160

0.39

  

NS

Central corneal thickness, per 1 μm

 − 0.008 (− 0.017, 0.002)

 − 0.294

0.11

  

NS

Visual field mean deviation, per 1 dB

 − 0.028 (− 0.088, 0.032)

 − 0.173

0.35

  

NS

  1. Percent changes in IOP = (postoperative IOP 6 months after the surgery − preoperative IOP)/preoperative IOP × 100.
  2. Percent changes in deep VD = (postoperative deep VD − preoperative deep VD)/preoperative deep VD × 100.
  3. B, unstandardized regression coefficient; β, standardized regression coefficient; CI, confidence interval; IOP, intraocular pressure; NS, not significant; VD, vessel density.
  4. *Multiple stepwise regression analysis.
  5. Significant values are in bold.
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