wˈɪt dɪskˈʌvɚz ðə pjˈuːpɪlɚɹi lˈaɪt ɹˈiːflɛks bˈeɪst ˌɔn ɐn ˈɔːtɑːpsi əvə tʃˈaɪld sˈʌfɚɹɪŋ fɹʌm hˈaɪdɹoʊsfˌæləs hˌuːz pjˈuːpəlz wɜː nˈoʊɾᵻd təbi ˌʌnɹᵻspˈɑːnsɪv tə tʃˈeɪndʒᵻz ɪn lˈaɪt.
Whytt discovers the pupillary light reflex based on an autopsy of a child suffering from hydrocephalus whose pupils were noted to be unresponsive to changes in light.