Impaired vision and blindness are common. About 3.4 million people in the US are blind or visually impaired. Vision is usually measured by visual acuity charts, and normal vision is expressed as 20/20 ...

Following the launch of the Vision Pro, Apple has published a number of support documents on how to use the device and what to do if motion sickness or discomfort is experienced when wearing the ...

Up to 19% of prevalent dementia cases may be attributable to impaired vision, a cross-sectional analysis suggested. Contrast sensitivity impairment showed the strongest relationship, followed by near ...