title: An automated statis perimeter/adaptometer using light emitting diodes.
abstract: An automated static perimeter/adaptometer is described which measures thresholds with lights of 2 wavelengths. The instrument uses light-emitting diodes to produce the stimuli and is controlled by a small computer, making it very suitable for clinical testing of large numbers of patients. The use of 2 LEDs with different peak emission wavelengths (530 and 660 nm) permits an assessment of the relative state of rod and cone mechanisms in a particular region of the retina either during dark adaptation or when the eye is fully dark adapted.
mesh_terms: D003623:Dark Adaptation; D004581:Electronics; D006801:Humans; D008905:Minicomputers; D010775:Photic Stimulation / Q000295:instrumentation; D010786:Photoreceptor Cells / Q000503:physiopathology*; D012164:Retinal Diseases / Q000503:physiopathology*; D012684:Sensory Thresholds; D058609:Visual Field Tests / Q000295:instrumentation*