Table 2

Changes in retinal vascular geometrical variables in patients with non-progression and progression of proliferative diabetic retinopathy 6 months after panretinal photocoagulation

Retinal vessel geometry
(47 eyes)
BL6MP value
nMeanSDMeanSD
Calibre (pixel)
ArterialNon-progression3128.80.833.81.0<0.01*
Progression1831.30.834.00.80.03*
P value0.02*0.88
VenousNon-progression3145.00.752.71.8<0.01*
Progression1846.20.851.01.7<0.01*
P value0.260.54
Tortuosity
ArterialNon-progression31−8.140.28−8.180.300.37
Progression18−7.690.49−8.350.110.03*
P value0.420.59
VenousNon-progression31−7.850.40−8.390.070.81
Progression18−8.320.06−8.340.090.68
P value0.240.59
Fractal dimension
ArterialNon-progression311.2100.0131.2010.0140.51
Progression181.2250.0131.2390.0140.16
P value0.380.05
VenousNon-progression311.2220.0111.2400.0080.07
Progression181.2570.0111.2520.0140.55
P value0.02*0.43
  • All values are represented as mean±SD. Differences between patients with non-progression and progression of proliferative diabetic retinopathy are given vertically, and changes from baseline (BL) to follow-up 6 months (6M) (paired data) are represented horizontally.

  • *Statistically significant.