Rigor in multi-luminance mobility test (MLMT) assessment. Following 40 min of dark adaptation, subjects underwent randomized eye patching, and then no eye patching, and were instructed to navigate one of 12 randomized MLMT courses. Testing was performed at the estimated sub-sensitivity cut-off level, and the estimated lower light sensitivity level. Videos were graded remotely by two masked, trained, independent graders, adjudicated by a third as necessary. A final score was computed based on accuracy and time needed to complete the course, factoring in any penalties. A passing grade on both components was necessary to pass the MLMT.