Natyashastra
अनवस्थिततारा च विभ्रान्ताकुलदर्शना । विस्तीर्णोत्फुल्लमध्या च विभ्रान्ता दृष्टिरुच्यते ॥ ७९॥
Vibhrāntā: The Glance in which the eyeballs are moving and so are the eyelids, and the middle ॥ of the eye॥ is wide open and full-blown, is called Vibhrāntā (confused).
english translation
anavasthitatArA ca vibhrAntAkuladarzanA । vistIrNotphullamadhyA ca vibhrAntA dRSTirucyate ॥ 79॥
hk transliteration by Sanscript