Coşkun M.Dağlioğlu M.C.Davran R.Llhan N.Lllhan Ö.Ayintap E.Keskin U.2020-06-252020-06-25201400084182https://doi.org/10.1016/j.jcjo.2013.10.004https://hdl.handle.net/20.500.12587/2396Objective: To research the effects of sub-Tenon's anaesthesia (STA) on ocular hemodynamics in patients with cataract using colour Doppler imaging (CDI). Design: Prospective clinical study. Participants: Thirty-four eyes of 34 patients with age-related cataract. Methods: Peak systolic velocity (PSV), end-diastolic velocity (EDV), and resistive index (RI) values of the ophthalmic artery (OA), central retinal artery, and central retinal vein were measured by CDI before and immediately after performing sub-Tenon block using 2 mL of 2% lidocaine with adrenaline (1:200 000). Results: Both PSV and EDV values were significantly decreased after sub-Tenon injection in all the studied vessels of the patients. However, no important changes were observed in the RI values of the vessels. Conclusions: STA markedly reduced ocular blood flow. The reduction may be more acceptable compared with other retrobulbar block methods. Sub-Tenon block should be performed carefully to senile patients with cataract with vascular occlusive disorder. © 2014 Canadian Ophthalmological Society.eninfo:eu-repo/semantics/closedAccessArticle49214114410.1016/j.jcjo.2013.10.0042-s2.0-8490142781824767218Q2