Effects of sub-Tenon's anaesthesia on ocular hemodynamics

Coşkun M., Daǧlioǧlu M. C., Davran R., Llhan N., Lllhan Ö., Ayintap E., ...More

Canadian Journal of Ophthalmology, vol.49, no.2, pp.141-144, 2014 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 2
  • Publication Date: 2014
  • Doi Number: 10.1016/j.jcjo.2013.10.004
  • Journal Name: Canadian Journal of Ophthalmology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.141-144
  • Hatay Mustafa Kemal University Affiliated: Yes

Abstract

Objective: 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.