Changes of retinal circulation time before and after panretinal laser photocoagulation in patients with diabetic retinopathy
10.13389/j.cnki.rao.2017.0244
- VernacularTitle:糖尿病视网膜病变患者全视网膜激光光凝前后视网膜动、静脉循环时间的改变
- Author:
Guang WANG
1
;
Long Xiao CHEN
;
Yuan Ai WANG
;
Fang ZHAO
;
Xue Feng SHI
;
Jia Wen ZHAI
;
Xue Jing WANG
Author Information
1. 中国医科大学附属盛京医院眼科
- Keywords:
diabetic retinopathy;
panretinal laser photocoagulation;
retinal circulation time;
fundus fluorescein angiograiphy
- From:
Recent Advances in Ophthalmology
2017;37(10):962-965
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the changes of preoperative and postoperative retinal circulation time in partretinal laser photocoagulation (PRP) in patients with diabetic retinopathy (DR).Methods Together 16 patients (16 eyes) were collected as the subjects in this study,who was diagnosed as severe non-proliferative and proliferative DR by fundus fluorescein angiography (FFA) examination and had PRP indications for undergoing pan-retinal laser photocoagulation.Then retinal arterial and venous cir culation time in all patients was recorded using FFA before and 1 to 3 months after treatment.Meanwhile,it was necessary to observe the following variables,including the developing duration and complete filling time of the four branches of the retinal artery,as well as the duration of the laminar flow and complete filling time of the four branches of the venous artery,followed by calculating mean transition time of retinal artery,retinal capillary,retinal vein,retinal arteriovenous flow for comparison and analysis of changes in transit time of retina in different time-periods before and after treatment.Results The mean transition time of the retinal capillary in patient was (1.58 ± 0.99) s before treatment and (2.19 + 1.23)s after treatment,and the difference was statistically significant(P =0.011),but there was no significant difference in the mean transition time of the retinal artery,retinal vein and arteriovenous flow (all P ＞ 0.05).Conclusion The transit time of the retinal capillary at 1 to 3 months after PRP is significantly longer than that before treatment.
