Pulsatile ocular blood flow variations with axial length and refractive error.
Ocular pulse amplitude (PA) and pulsatile ocular blood flow (POBF) were studied in 80 eyes from 80 subjects with a refractive error between +3.00 and -28.00 dpt using the Langham Ocular Blood Flow System. PA and POBF were correlated with axial length and refractive error using linear regression analysis. A significant correlation (p < 0.001) was found between PA and axial length (r = -0.787), PA and refractive error (r = 0.775), POBF and axial length (r = -0.655) and POBF and refractive error (r = 0.650). Myopic eyes were further divided into subgroups according to axial length, refractive error and fundus oculi characteristics. Each subgroup exhibited a significant reduction in PA (p < 0.001) compared to the control group. POBF reduction was significant in every subgroup except the subgroup with a refractive error lower than 6 dpt and the subgroup with an axial length shorter than 26 mm.
Ravalico
G
G
Eye Clinic, University of Trieste, Italy.
Pastori
G
G
Crocè
M
M
Toffoli
G
G
D000328:Adult; D001783:Blood Flow Velocity / Q000502:physiology; D001794:Blood Pressure; D005123:Eye / Q000033:anatomy & histology* / Q000098:blood supply*; D005260:Female; D005654:Fundus Oculi; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D011673:Pulsatile Flow; D012030:Refractive Errors / Q000503:physiopathology*; D012044:Regression Analysis