‘Doctor Who’ fans, here’s what the ‘sleep’ in your eyes really is
After seeing Sherlock writer Mark Gatiss’s ‘Sleep No More’ episode of Doctor Who last season, did you wonder what the ‘sleep’ in your eyes actually is? Unfortunately it’s not really the Sandmen from Le Verrier Space Station. The clever folks at todayifoundout.com explain that the “sleep” is in fact a type of “rheum”, known as … >