title: Decrease of visual acuity in patients with clear media and normal fundi. Objective screening methods for differentiation and documentation.
abstract: For differentiation of unilateral reduction of visual acuity in patients with clear media and normal fundi, the Swinging Flashlight Test was used. Optic neuropathies as a rule give pathological results. On the other hand refraction scotomas, functional amblyopias and malingering produce a normal outcome of this test in general. For documentation of afferent pupillary defects a photographic method is described. Electronystagmography is advocated as a method for detection of malingerers and neurotics among patients complaining of acute uni- or bilateral visual acuity reduction. Optokinetic nystagmus is recorded using Bangerter's filters in front of the patient's eye. This method allows a certain estimation of the visual acuity.
mesh_terms: D004584:Electronystagmography / Q000379:methods; D006801:Humans; D008306:Malingering / Q000175:diagnosis; D009497:Neurotic Disorders / Q000175:diagnosis; D009760:Nystagmus, Physiologic; D010781:Photography; D011680:Pupil; D014786:Vision Disorders / Q000175:diagnosis*; D014787:Vision Tests / Q000379:methods*; D014792:Visual Acuity