Here's what a literal hairy eyeball looks likeS

Usually, when someone gives you the hairy eyeball, it's just a figure of speech, but this tumor proves the term is sometimes literal.

This photo appears in the New England Journal of Medicine, where ophthalmologists Ali Mahdavi Fard and Leili Pourafkari explain that a 19-year-old patient arrived at their clinic with this mass. The mass proved to be a limbal dermoid, a benign tumor that can appear within the cornea—this particular one just happened to have several black hairs growing out of it. Fortunately, the physicians were able to excise the mass, improving the patient's vision (correction: actually improving it very little) and leaving his eyeball thankfully bald.

The Hairy Eyeball — Limbal Dermoid [NEJM via Nerdcore]