Ocular Blood Flow in the Fellow Eye of Patients with Rhegmatogenous Retinal Detachment and Peripheral Vitreochoreoretinal Dystrophies
The paper is aimed at studying the dynamics of regional ocular blood flow of the fellow eye of 33 patients with peripheral degenerations who were operated for rhegmatogenous retinal detachment or received laser photocoagulation. All measurements were taken before and after the surgery or procedure. Color Doppler Imaging (CDI) and Pulsed Doppler Imaging were used to measure hemodynamic parameters including the peak systolic velocity (Vsyst, cm/s), end-diastolic velocity (Vdiast, cm/s), and resistance index (RI) of blood flow in the central retinal artery (CRA), the short posterior ciliary arteries (PCA), and the ophthalmic artery (OA). All patients were examined before treatment and 1, 3, 6, and 12-months after treatment. In postoperative period, patients showed a statistically significant reduction of Vsyst and increased RI in short PCA in the fellow eye (p < 0.05). In CRA, no changes were noted. Patients with progression of peripheral degenerations had deficient choroidal blood flow. It can be concluded that Doppler methods are highly informative for circulatory parameters of patients with peripheral degenerations and rhegmatogenous retinal detachment. Reduced Vsyst and increased RI in short PCA (p < 0.05) could be considered as the risk factors of peripheral degeneration progression in the fellow eye of patients with retinal detachment. // Russian Ophthalmological Journal, 2014; 2:52-6.