title: Traumatic fracture of a Choyce-style anterior chamber lens.
abstract: Accidental blunt trauma to a pseudophakic eye fractured the Choyce-style lens which had been implanted 11 months previously. This lens was removed, and its fracture was examined microscopically and duplicated experimentally using a torque-loading force and a shock-loading force. The nature and occurrence of lens fracture in situ depends on the direction of trauma.
mesh_terms: D000368:Aged; D003316:Corneal Diseases / Q000209:etiology*; D004487:Edema / Q000209:etiology*; D005131:Eye Injuries / Q000150:complications / Q000601:surgery*; D006801:Humans; D007910:Lenses, Intraocular / Q000592:standards*; D008297:Male; D013314:Stress, Mechanical