title: Computerized kinetic perimetry detects tubular visual fields in patients with functional visual loss.
abstract: OBJECTIVE
  To report a novel test that uses computerized kinetic perimetry to detect tubular visual fields in patients with functional visual loss.
  
  
  METHODS
  Observational case series.
  
  
  METHODS
  Ten patients who demonstrated generalized visual field constriction on prior examinations underwent testing combining computerized kinetic perimetry with a reversed Galilean telescope, used for optical visual field expansion.
  
  
  RESULTS
  Six patients with physiologic visual field constriction demonstrated expansion of their visual fields with the use of the reversed telescope. Four patients with functional visual loss responded to the reversed telescope by demonstrating tubular visual fields, with responses equal to or smaller than their demonstrated visual fields delineated without the telescope.
  
  
  CONCLUSIONS
  This test uses a computerized kinetic examination to reduce the subjective nature of tangent screen testing for tubular visual fields and to provide a computerized recording of visual fields. This method is a novel and easy-to-use technique to demonstrate functional visual loss.
authors.affiliation: Department of Ophthalmology, Scheie Eye Institute, University of Pennsylvania School of Medicine, 51 North 39th Street, Philadelphia, PA 19104, USA.
authors.forename: Stacy L
authors.initials: SL
authors.lastname: Pineles
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Volpe
mesh_terms: D003205:Computing Methodologies; D005901:Glaucoma / Q000150:complications; D006801:Humans; D010211:Papilledema / Q000150:complications; D011446:Prospective Studies; D012174:Retinitis Pigmentosa / Q000150:complications; D014786:Vision Disorders / Q000175:diagnosis* / Q000209:etiology; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields