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Quantifying Adaptation and Fatigue Effects in Frequency Doubling Perimetry
2007
Investigative Ophthalmology and Visual Science
PURPOSE. The second eye tested in frequency doubling perimetry has higher thresholds (reduced sensitivity) than the first. The authors investigated how this "second-eye effect" evolves over time and studied systematic changes in threshold in the first eye. METHODS. Thresholds were measured in four subjects for 5°square, 0.5-cyc/deg sine wave gratings counterphase-flickered at 18 Hz, using a "method of a thousand staircases" to track changes in thresholds at 10-second intervals. Stimuli appeared
doi:10.1167/iovs.06-0685
pmid:17251498
fatcat:4vbpmbro6rb4pktbn5rnlzmaiu