Allie Dull, a teacher of students with visual impairments across the Dallas-Fort Worth, helped Dayanara find her new prosthetic eyes. The price for prosthetics ranged from $5,000 to $10,000, which was ...

"It is not a new color," John Barbur, a professor of optics and visual science at City St George's, University of London, ...

In celebration of the Hubble Space Telescope's 35 years in Earth orbit, NASA is releasing an assortment of compelling images ...