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. 2019 May 16;145(6):516–522. doi: 10.1001/jamaoto.2019.0667

Figure. Pupillometry Results.

Figure.

Peak pupil dilation size in millimeters was measured at 0-dB SNR (A) and 3-dB SNR (B) by adjusting the target speech value to less than 65-dB SPL babble noise. The vertical lines within the shaded bars represent the median values; shaded bars, interquartile ranges; the error whiskers, the highest and lowest points; and the circle beyond the highest point at the PSAP reading of the 3-dB SNR condition, an outlier. HA indicates hearing aid; IQR, interquartile range; SNR, signal-to-noise ratio; SPL, sound pressure level; PSAP, personal sound amplification product.