Natyashastra
भृशमुद्वृत्ततारा च नष्टोभयपुटान्विता । समा विकसिता दृष्टिर्विस्मिता विस्मये स्मृता ॥ ६३॥
Vismitā: The level Glance which is fully blown and in which eyeballs are throughly turned up and the two eyelids are motionless, is called Vismitā (astonished); it is used in astonishment.
english translation
bhRzamudvRttatArA ca naSTobhayapuTAnvitA । samA vikasitA dRSTirvismitA vismaye smRtA ॥ 63॥
hk transliteration by Sanscript