title: Miniature dark adaptometer using tritium as a light source.
abstract: A miniature dark adaptometer to measure monophasic rod function, used with disposable masks, permitted 11 measurements to be taken in 1 1/2 hours. The light source, tritium-phosphoric sulfide gas, had a known brightness decay rate incorporated in the calibration table which is provided with the instrument.
mesh_terms: D003623:Dark Adaptation; D008029:Lighting; D008904:Miniaturization; D014316:Tritium; D014787:Vision Tests / Q000295:instrumentation*
chemical_list: D014316:Tritium