Vision impairment means that a person's eyesight cannot be recovered to a "normal" level.  Vision impairment may be caused by a loss of visual acuity; it may also be caus...
Vinvision Braille watch has very good touch feeling due to its excellent tactile dot design, assembled with Swiss quartz guarantee a better performance...
Vinvision Technology was founded in 2008, since its foundation, it was committed to develop and provide leading-edge assistive technology devices for the blind and visually impaired so a...