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Ocular Blood Flow Parameters in Patients with Rhegmatogenous Retinal Detachment
Tomislav Jukić
Damir Katušić
Igor Čikara
Rajko Kordić
Jakov Šikić
Nenad Vukojević
Borna Šarić
Sažetak
The aim of the present study is to evaluate the potential statistically significant differences in the ocular blood flow
parameters in eyes with rhegmatogenous retinal detachment (RD). Eleven patients, 5 females and 6 males, mean age
46 years (range 22–70), with the unilateral rhegmatogenous RD were enrolled in the study. Colour Doppler Ultrasound
was used to measure ocular blood flow velocities in the ophthalmic artery (OA), posterior ciliary’s arteries (PCA) and
ophthalmic vein (OV). The contralateral eye served as a control. All Doppler examinations were performed 1 day before
and exactly 3 days after the retinal detachment surgery. The measurements of the peak systolic velocity (Vmax), diastolic
velocity (Vd), minimum velocity (Vmin), time-averaged velocity (TAV), resistive index (RI) and pulsatility index (PI)
showed no statistically significant difference (by paired Student's t-test, p>0.05) between the OA, PCA and OV in
healthy eyes and eyes with RD before operation, as well as between the eyes with RD before and after the operation.
Only was increased RI in OV of eyes with RD after the surgery (p<0.05). All these parameters were not related with 2 or
more quadrants of RD, but the difference in duration of retinal detachment in days is statistically significant (by
Wilcoxon t-test p>0.05). Pearson correlation method gave statistically significant correlation between RI and PI of the
OA in healthy eyes (r =0.826, p<0.01), eyes with RD before operation (r =0.847, p<0.01) and eyes with RD after the operation
(r=0.856, p<0.01). Formula for the calculation of PI by RI was derived using linear regression analysis in all
three cases. Scleral buckling surgery leaves the ocular blood parameters in OA unchanged. The correlation between RD
and logarithm of duration of RD in days is statistically significant.
Ključne riječi
retinal detachment; Colour Doppler ultrasonography; resistive index; pulsatility index; ophthalmic artery
Hrčak ID:
27895
URI
Datum izdavanja:
20.6.2005.
Posjeta: 872 *