īṣatsaṃmīlite 'ṅgulyā yathā cakṣuṣi gṛhyate / pṛthageko 'pi bhinnatvāc cakṣur vṛttes tathaiva naḥ //
Just as when the eye is slightly pressed by a finger, even a single [object] is perceived as separate [images] due to the difference in the eye's functioning, so it is in our case.