naked eye

• Se réfère à la vision humaine normale, sans l'aide d'aucun instrument optique tel que télescope, microscope ou jumelles.

Refers to normal human vision without the aid of any optical instruments such as telescopes, microscopes, or binoculars.

1. Unaided visionB1formal

   The ability to see something without the help of a telescope, microscope, or other optical instruments.

   à l'œil nu

   • The planet Venus is visible to the naked eye in the evening sky.
   • Some bacteria are too small to be seen with the naked eye.
   • The details on the coin were barely discernible to the naked eye.