Retinal blood supply changes after vitrectomy combined with panretinal photocoagulation in PDR patients with anterior segment neovascularization
10.3980/j.issn.1672-5123.2016.10.27
- VernacularTitle:玻璃体切割联合眼内全视网膜光凝对 PDR合并虹膜新生血管的视网膜供血影响
- Author:
Yong, WANG
;
Xing-Dong, SHI
;
Bo-Jie, HU
;
Ling-Zhai, BIAN
;
Xiao-Rong, LI
- Publication Type:Journal Article
- Keywords:
color Doppler flow imaging;
vitrectomy;
proliferative diabetic retinopathy;
iris neovascularization;
hemodynamic
- From:
International Eye Science
2016;16(10):1894-1897
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To investigate hemodynamic alterations of retrobulbar vessels in proliferative diabetic retinopathy ( PDR) patients with anterior segment neovascularization, before and 3mo after vitrectomy combined with panretinal photocoagulation and to explore the clinical significance.
●METHODS: Color Doppler flow imaging ( CDFl ) was used for measurement of blood flow velocities and resistive indexes ( Rl ) of the ophthalmic artery ( OA ) , short posterior ciliary arteries ( sPCA ) and central retinal artery ( CRA ) in 21 eyes of 21 PDR patients with anterior segment neovascularization. CDFl parameters were obtained before and 3mo after vitrectomy combined with panretinal photocoagulation ( PRP) .
● RESULTS: Peak systolic velocity ( PSV ) and end diastolic velocity ( EVD ) of CRA were significantly increased after surgeries, Rl were decreased significantly (P<0. 05). Parameters of sPCA and OA have no change after surgeries (P>0. 05).
●CONCLUSION: Vitrectomy combined with panretinal photocoagulation might increase the velocity of CRA, decrease Rl and improve ocular blood supply postoperatively. lt may delay or prevent the process of neovascular glaucoma.
