Sāṃkhya Kārikā verse 7

atidūrāt sāmīpyāt-indriyaghātāt-mano-anavasthānāt |
saukṣmyāt-vyavadhānāt-abhibhavāt samānābhihārāt-ca ||

indriya - faculty of sense; sense; organ of sensemanas - mind

Commentaries and Reflections

TKV Desikachar:

“In observing, we must remember a few more things:
When we are not able to see something,
It is either because something else is more obvious,
or because it is too close to us.”

Paul Harvey:

(We may not perceive what is within the range of the senses (Pratyakṣa) because we are:)
Disinterested.
Overly interested.
Blind or deaf to what is in front of us.
Distracted.
Not relating with what is there.
Seeing something between.
Letting something else dominate.
Confusing with something similar.