Abstract
Experiments are described in which the steady-state accommodation response versus stimulus curve was measured with an infrared autorefractor for high-contrast stimuli having a 100% square-wave temporal modulation of luminance in the frequency hand 1–200 Hz. Slightly more accurate responses were found at frequencies -50 100 Hz. i.e. above flicker fusion. The relevance of the results to practical situations in which flicker may be experienced is discussed.
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