Yikes

Introducing a demodex. This little mite lives inside the ducts of your eyelids quite quietly minding his own business... Until you get blepharitis and then, whilst you're sleeping it crawls up onto your lid surface and munches away happily then dies three weeks later exploding his poo into your ducts thus causing more irritation and blepharitis.
Excitingly there is now a way to cure it and in 2016 we're going to be starting the battle against the demodex. Need that cape of mine