ròu​yǎn

naked eye

肉眼 ròu​yǎn
naked eye noun
The human eye used alone without the help of a telescope, microscope, or other instruments
layman's eyes
A person's ordinary or limited perspective; the vision of a common mortal as opposed to one with spiritual or expert insight

Frequency

Movie subtitles
1.58 per million appears in 1% of films
Written text
3.69 per million

Sources