Studies have confirmed that ginkgo increases blood flow to the retina , and can slow retinal deterioration resulting in an increase of visual acuity .

研究已证实，银杏增加视网膜血流量，并能减缓视网膜的恶化，结果导致视力的提高。

Nearly all the children in the study had bleeding in the brain and retinal hemorrhages .

研究中，几乎所有的孩子都有脑出血或者视网膜出血的现象。

Central retinal vein occlusion can be divided into two main subtypes : nonischemic and ischemic .

视网膜中央静脉阻塞可分为两种主要的亚型：非缺血型和缺血型。

It is the most common type of retinal detachment , ahead of tractional and exudative .

这是视网膜脱离最常见的一种类型，比牵拉性和渗出性的病例多发。

Most password alternatives previously proposed by government or the private sector have revolved around biometric identifiers such as facial scans , fingerprints or retinal scans .

政府或私人部门之前建议的那些密码组合，围绕的都是诸如面部扫描、指纹扫描或视网膜扫描之类的生物计量识别手段。