title: Adder bite on eyelid along with retained intraorbital fangs.
abstract: OBJECTIVE
  Snake bite to the eye is a rare event. Most cases reported in the literature are due to boa constrictor bites. This is a rare case of snake bite from a common adder (Vipera berus) to the ocular adnexa along with a retained intraorbital tooth.
  
  
  METHODS
  A 57-year-old man presented with a history of being bitten by an adder in the left eye upper lid 12 days previously while bending down to pick up a log at his farm. He developed a firm, tender lump in the medial part of his left upper eyelid.
  
  
  RESULTS
  A CT scan revealed an extraconal curved calcific dense foreign body, about 5 mm in length consistent with adder's tooth in the superomedial part of left orbit.
  
  
  CONCLUSIONS
  There are few reports of adder bites on face, ear and neck. We report a rare case of adder bite on eyelid along with retained intraorbital fangs and its clinical outcome.
authors.affiliation: Department of Ophthalmology, Raigmore Hospital , Inverness , United Kingdom.
authors.forename: Pallavi
authors.initials: P
authors.lastname: Tyagi
authors.forename: Iain F
authors.initials: IF
authors.lastname: Whyte
mesh_terms: D000818:Animals; D005129:Eye Foreign Bodies / Q000000981:diagnostic imaging / Q000209:etiology*; D005143:Eyelids / Q000000981:diagnostic imaging / Q000293:injuries*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009916:Orbital Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D012909:Snake Bites / Q000000981:diagnostic imaging / Q000209:etiology; D014057:Tomography, X-Ray Computed; D014070:Tooth; D017819:Viperidae