Investigation of alterations in retrobulbar hemodynamics and their correlation with choroidal thickness after strabismus surgery

Table 2 Blood flow velocities (cm/s) in the posterior ciliary artery among the groups

Parameter	Group 1 (n = 14)	Group 2 (n = 12)	Control (n = 15)	P^*
PSV
Preoperative	21.08 ± 3.49^a	23.95 ± 4.38	23.41 ± 5.86
Postop 1st week	24.64 ± 2.71^b	22.92 ± 4.04	24.15 ± 5.62	0.119
Postop 1st month	20.81 ± 3.67^a	21.42 ± 6.12	23.35 ± 5.52
P^** (within groups)	0.002	0.183	0.926
EDV
Preoperative	6.44 ± 2.73	7.09 ± 2.33	8.09 ± 3.24
Postop 1st week	6.86 ± 1.42	6.28 ± 2.52	7.69 ± 3.14	0.815
Postop 1st month	5.99 ± 1.75	6.29 ± 2.84	7.26 ± 3.34
P^** (within groups)	0.230	0.320	0.323
RI
Preoperative	0.69 ± 0.11	0.71 ± 0.09	0.66 ± 0.12
Postop 1st week	0.72 ± 0.05	0.72 ± 0.09	0.69 ± 0.09	0.962
Postop 1st month	0.72 ± 0.07	0.71 ± 0.08	0.69 ± 0.07
P^** (within groups)	0.790	0.850	0.974
PI
Preoperative	1.15 ± 0.26	1.31 ± 0.35	1.14 ± 0.32
Postop 1st week	1.27 ± 0.25	1.24 ± 0.26	1.18 ± 0.22	0.576
Postop 1st month	1.22 ± 0.21	1.22 ± 0.19	1.11 ± 0.19
P^** (within groups)	0.230	0.529	0.497

Data are given as mean ± standard deviation. Same letters denote the lack of statistically significant differences within groups measurements
Postop Postoperative, PSV Peak systolic velocity, EDV End-diastolic velocity, RI Resistive index, PI Pulsatility index
^*Repeated measures analysis of variance (between groups)
^**Friedman test

ISSN: 1471-2415