sightless

adj.

无视力的，盲的；

1. Sightless, he listened, hunting the booming sounds of the ocean.
   他看不见，只能听，寻找着海浪的澎湃声。
2. His face was like yellow wax, his eyes darkened, as it were sightless.
   他的脸色蜡黄，眼睛变得阴暗，茫然无神。

Walking aid for the sightless
The sightless view: neural correlates of occluded objects.
Physical capacities of sightless adolescents.
Vision thermalization for sightless & visually impaired
TouchIn: Sightless two-factor authentication on multi-touch mobile devices
A PC-based Braille library system for the sightless
Blind People: The Private and Public Life of Sightless Israelis
The subsection for Sightless People in "Anastasie Fătu"Botanic Garden, "Alexandru Ioan Cuza"University of Iasi.
Seeing with ears: Sightless humans' perception of dog bark provides a test for structural rules in vocal communication
The influence of water and light upon the color change of sightless frogs (Rana temporaria)