Fiebai B, Ejimadu C S, Komolafe R D
Department of Ophthalmology, University of Port Harcourt Teaching Hospital, Port Harcourt, Rivers State, Nigeria.
Niger J Clin Pract. 2014 Jul-Aug;17(4):462-6. doi: 10.4103/1119-3077.134040.
The objective of the following study is to determine the incidence of retinal vein occlusion (RVO) and identify the risk factors in RVO in patients presenting to a tertiary hospital in Rivers State.
The medical records of consecutive patients with RVO who presented to the retina clinic of the eye Department of University of Port Harcourt Teaching Hospital over a 5 year period were retrieved. Information extracted from the data included the demographic data of patients, presenting visual acuity, history of systemic and ocular disease, blood pressure and intraocular pressure. Data was analyzed using the Statistical Package for Social Sciences 20.0. (IBM Corporation and its licensors 1989,2011).
Out of the 364 patients seen at the retina clinic during this period, 27 (7.4%) had RVO. Seven patients had bilateral disease. The incidence of RVO in the retinal clinic was 7.4%. Systemic hypertension, diabetes mellitus, hyperlipidemia and glaucoma were the main risk factors recorded in our patients. Central retinal vein occlusion (CRVO) 20 (74%) was more predominant than branch retinal vein occlusion (BRVO) 7 (26%). 21 eyes of patients with CRVO had visual acuities of < 3/60, while 7 eyes of patients with BRVO had visual acuities less than 3/60. Vitreous hemorrhage 10 (52.6%) was the most common complication encountered. All cases of non-perfused vein occlusion 4 (14.8%) were seen in patients who had CRVO.
The incidence of RVO in our hospital is high. RVO is a significant cause of visual impairment, with CRVO being more common. Identifying associated risk factors and treating these could help reduce the incidence of RVO.
本研究的目的是确定视网膜静脉阻塞（RVO）的发病率，并识别在河流州一家三级医院就诊的患者中RVO的危险因素。
检索了在5年期间到哈科特港大学教学医院眼科视网膜诊所就诊的连续性RVO患者的病历。从数据中提取的信息包括患者的人口统计学数据、就诊时的视力、全身和眼部疾病史、血压和眼压。使用社会科学统计软件包20.0对数据进行分析。（IBM公司及其许可方，1989年，2011年）。
在此期间在视网膜诊所就诊的364例患者中，27例（7.4%）患有RVO。7例患者患有双侧疾病。视网膜诊所中RVO的发病率为7.4%。系统性高血压、糖尿病、高脂血症和青光眼是我们患者中记录的主要危险因素。中央视网膜静脉阻塞（CRVO）20例（74%）比分支视网膜静脉阻塞（BRVO）7例（26%）更常见。CRVO患者的21只眼中视力<3/60，而BRVO患者的7只眼中视力低于3/60。玻璃体出血10例（52.6%）是最常见的并发症。所有4例（14.8%）无灌注静脉阻塞病例均见于CRVO患者。
我院RVO的发病率较高。RVO是视力损害的重要原因，CRVO更为常见。识别相关危险因素并进行治疗有助于降低RVO的发病率。
