Srimad Bhagavatam Canto 03, Chapter 06, Text 15

SB 3.6.15

nirbhinne aksini tvasta
 loka-palo ’visad vibhoh
caksusamsena rupanam
 pratipattir yato bhavet
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Thereafter, the two eyes of the gigantic form of the Lord were separately manifested. The sun, the director of light, entered them with the partial representation of eyesight, and thus the living entities can have vision of forms.
Srimad Bhagavatam Canto 03, Chapter 06, Text 14
Srimad Bhagavatam Canto 03, Chapter 06, Text 16