Table 2

Blood flow perfusion of different layers in 10k lux and 4k lux group at different time points

Blood flow perfusion (%)Pre-readingPost-reading5th minute15th minuteP value*
10k lux, mean (SD)
Superficial retinal capillary40.6 (1.3)40.7 (1.3)40.5 (1.8)40.4 (1.8)0.730
Deep retinal capillary40.2 (1.6)40.8 (1.5)40.5 (1.9)40.4 (1.5)0.229
Choroidal capillary53.5 (1.6)53.6 (1.2)53.2 (1.4)53.4 (1.6)0.041
4k lux, mean (SD)
Superficial retinal capillary40.4 (1.3)40.2 (1.6)40.8 (1.7)40.5 (1.5)0.064
Deep retinal capillary39.5 (1.4)40.0 (1.7)40.3 (1.7)39.9 (1.5)0.063
Choroidal capillary53.1 (2.0)53.2 (1.7)53.3 (2.0)52.9 (1.7)0.162
  • *Linear mixed models were applied to compare the blood flow perfusion between different time points within each group of sunlight exposure by adjusting the spherical equivalent refraction and intraocular pressure.