Naked eye

"a human eye"
The naked eye

Naked eye, also called bare eye or unaided eye, is the practice of engaging in visual perception unaided by a magnifying or light-collecting optical instrument, such as a telescope or microscope. Vision corrected to normal acuity using corrective lenses is still considered "naked".

In astronomy, the naked eye may be used to observe celestial events and objects visible without equipment, such as conjunctions, passing comets, meteor showers, and the brightest asteroids, including 4 Vesta. Sky lore and various tests demonstrate an impressive variety of phenomena visible to the unaided eye.

Basic accuracies

The basic accuracies of the human eye are:

Visual perception allows a person to gain much information about their surroundings:

  • the distances and 3-dimensional position of things and persons
  • the vertical (plumb line) and the slope of plain objects
  • luminosities and colors and their changes by time and direction
Other Languages
asturianu: Simple vista
català: Ull nu
Deutsch: Freiäugig
español: Simple vista
Esperanto: Nuda okulo
français: Œil nu
한국어: 육안
Bahasa Indonesia: Mata telanjang
italiano: Occhio nudo
latviešu: Neapbruņota acs
Lëtzebuergesch: Mat bloussem A
Bahasa Melayu: Mata kasar
Nederlands: Blote oog
日本語: 肉眼
ਪੰਜਾਬੀ: ਨੰਗੀ ਅੱਖ
Plattdüütsch: Freesichtigkeit
polski: Gołe oko
Simple English: Naked eye
کوردی: چاوی پەتی
svenska: Blotta ögat
粵語: 肉眼觀察
中文: 肉眼