Symptoms often include headaches that worsen over time, hearing loss, changes in vision and memory loss.

CNN: Sheryl Crow: Brain tumor is a 'bump in the road'

The aim is to systematically explore the roots of vision and decision-making by analyzing the billions of cells and synapses in the brain's cerebral cortex, which plays a critical role in vision, memory and awareness.

WSJ: Paul Allen Gives $300 Million to Brain Research

They may provide simpler medical devices and medication schedules to patients with vision or dexterity problems, and refer some to a memory clinic.

WSJ: Diabetes Care for the Elderly Focuses on Simpler Medication, More Home Monitoring

Friends said he was suffering from short-term memory loss and blurred vision.

BBC: UK

More than any president in recent memory, Reagan uniquely had all the qualities of an American president: Optimism, determination, vision, and gravitas.

FORBES: GOP Candidates Must Win One For The Gipper

Named for the product's "utopic vision, " ZionEyez now has a prototype with a more grounded spec list, including a 720p camera and 8GB of memory, along with micro-USB and Bluetooth connectivity for livecasting to Qik or LiveStream -- The Truman Show style.

ENGADGET: Insert Coin: Eyez 720p video-recording glasses (video)