Turns out that long stints in outer space affect levels of cerebrospinal fluid. That explains why many astronauts who had 20/20 vision before space missions needed glasses upon return, according to a paper presented this week.
Noam Alperin's research team scanned the brains and eyeballs of seven astronauts prior to longer missions onboard the International Space Station. They compared those scans with nine astronauts who had short missions. The difference in cerebrospinal fluid (CSF) was significant:
The results showed that, compared to short-duration astronauts, long-duration astronauts had significantly increased post-flight flattening of their eyeballs and increased optic nerve protrusion. Long-duration astronauts also had significantly greater post-flight increases in orbital CSF volume, or the CSF around the optic nerves within the bony cavity of the skull that holds the eye, and ventricular CSF volume--volume in the cavities of the brain where CSF is produced. The large post-spaceflight ocular changes observed in ISS crew members were associated with greater increases in intraorbital and intracranial CSF volume.
Back in the early Wired magazine days, we used to joke about technology that seemed to be perpetually “just around the corner” — like storing the entire Library of Congress in a sugar cube-sized device, nanobots, and contact lens computer displays. Looks like the latter is almost ready for prime time! Just this week, startup […]
In many countries you can buy inexpensive eyeglasses and contact lenses without a prescription. That’s not the case in the United States. In 2016 the American Optometric Association (AOA) spent $1.8 million lobbying and another $1.4 million in campaign contributions to ensure corrective lenses are expensive for Americans, and therefore highly profitable. Yascha Mounk, a […]
Approximately 14 percent of the world’s population suffer from dry eye disease (DED) but treatments are limited because it’s difficult to model the complex human eye for drug development. Now though, University of Pennsylvania bioengineers developed an “eye-on-a-chip” complete with a motorized blinking eyelid. The hope is that the artificial eye will lead to a […]
Boxed wines have come a long way since their admittedly subpar debut, and it’s now possible to grab a box of wine that delivers a surprising amount of flavor and body for a price that won’t break the bank. This Boxxle Premium Wine Dispenser makes it even easier to enjoy your favorite bag-in-box wine by […]
If you’re interested in either beginning or furthering a career in graphic design, you need to have a thorough understanding of Adobe’s famed editing and illustration tools, and these bundles will get you to where you need to be for a fraction of what you’d pay for an in-class education. 1. The Essential Adobe Photoshop […]
Laptops are great when it comes to getting work done on the move, but sometimes you need a better and more responsive keyboard in order to get your work done away from your desktop. Here are six top-rated Bluetooth keyboards that will help you power through your tasks both at the office or while you’re […]