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P. Chelazzi, M. Prati, F. Contini, P. Sivelli, V. Viganò, S. Donati, C. Azzolini; Orbital Color Doppler Imaging Before and After Pars Plana Vitrectomy. Invest. Ophthalmol. Vis. Sci. 2007;48(13):2256.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate the effects of Pars Plana Vitrectomy (PPV) on retrobulbar haemodynamics by Color Doppler Imaging (CDI) in patients with macular pucker.
10 eyes of 10 patients with macular pucker undergoing PPV with retrobulbar anaesthesia were evaluated before and immediately after surgery. Core and posterior vitreous was removed and peeling of macular pucker was carried out by standard three-port PPV. CDI was performed to measure peak systolic velocity, end diastolic velocity and resistive index of the ophthalmic artery, central retinal artery and posterior ciliary arteries. Maximum, minimum and mean velocities from central retinal vein and superior ophthalmic vein were also obtained by CDI. 10 eyes of 10 healthy subjects were evaluated as control group before surgery.
No significant differences were detected among preoperative and postoperative haemodynamics values in patients undergone PPV (p > 0.05). Besides, blood velocity Doppler parameters of orbital arteries and veins in patients with macular pucker were similar to those of control group (p > 0.05).
This study demonstrates that PPV with retrobulbar anaesthesia does not induce significant alterations on retrobulbar haemodynamics in patients with macular pucker.
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