More than 2 million Americans have macular degeneration and another 8 million are at high risk. The best way to deal with it is to get an eye exam and get out in front of it.
There are many causes, or suspected causes of dry eye syndrome. A surprising one is diet – in particular, omega-3s.
Scientists have found that blinking may be linked to how we pay attention, rather than simply a mechanism to lubricate the eyes.
If you stare at a dim light bulb without moving your eyes for about ten seconds, and then look at a blank wall or ceiling, you will likely see an afterimage of the light. Your brain may be playing tricks on your eyes.