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

Table 1 Blood flow velocities (cm/s) in the ophthalmic artery among the groups

Parameter	Group 1 (n = 14)	Group 2 (n = 12)	Control (n = 15)	P*
PSV
Preoperative	50.92 ± 14.34	55.63 ± 15.42	56.78 ± 8.54
Postop 1st week	50.16 ± 9.95	60.15 ± 19.96	56.29 ± 8.45	0.712
Postop 1st month	50.62 ± 10.41	57.71 ± 10.02	56.04 ± 7.03
P^** (within groups)	0.662	0.486	0.975
EDV
Preoperative	11.29 ± 6.82	11.42 ± 6.64	9.22 ± 4.45
Postop 1st week	8.48 ± 3.63	10.61 ± 5.85	8.41 ± 42.03	0.678
Postop 1st month	9.54 ± 6.04	10.44 ± 6.05	8.82 ± 3.92
P^** (within groups)	0.067	0.717	0.407
RI
Preoperative	0.79 ± 0.07^a	0.79 ± 0.11^c	0.83 ± 0.09
Postop 1st week	0.83 ± 0.07^b	0.81 ± 0.12^d	0.85 ± 0.08	0.760
Postop 1st month	0.82 ± 0.08^b	0.82 ± 0.09^d	0.84 ± 0.08
P^** (within groups)	0.029	0.045	0.641
PI
Preoperative	1.86 ± 0.48	1.94 ± 0.81	2.15 ± 0.63
Postop 1st week	2.01 ± 0.44	2.04 ± 0.61	2.21 ± 0.58	0.976
Postop 1st month	2.12 ± 0.54	2.11 ± 0.53	2.33 ± 0.81
P^** (within groups)	0.390	0.423	0.717

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