Because some people with impaired vision can indeed navigate using the echoes of finger snaps, hand claps, or mouth clicks.

因为一些视力损伤人士的确可以利用响指、拍手或咂舌声的回声来定位。

Rosalie had developed a condition known as Charles Bonnet Syndrome, in which patients with either impaired vision or total blindness suddenly hallucinate whole scenes in vivid color.

罗萨莉患有邦纳症候群，患者通常视觉受损或是完全丧失视觉，眼前却突然出现色彩缤纷的各种幻觉。

During the Russo-Japanese war in 1904 and '05', the Japanese doctor Tatsuji, in a way, noticed that in general, soldiers with these injuries weren't completely blind, even though many of them had impaired vision.

在1904年和05年的日俄战争期间，日本医生 Tatsuji 注意到，这些受伤的士兵并没有完全失明，尽管他们中的许多人视力受损。