Definition

1. Adjective:
   • Relating to, used by, or involving both eyes simultaneously: Describes vision, devices, or processes that require or utilize both eyes working together.
   • Adapted for the use of both eyes at once: Typically describes optical instruments like telescopes or microscopes that have two eyepieces.

Examples of Usage

• Adjective:
  • Humans have binocular vision, which allows for depth perception.
  • The scientist observed the specimen through a binocular microscope.
  • The device is designed for binocular viewing to create a three-dimensional effect.

Advanced Usage

• "binocular disparity": The slight difference in the images seen by the left and right eyes, which is crucial for stereoscopic vision.
  • Binocular disparity helps the brain calculate distances to objects.
• "binocular rivalry": A visual phenomenon where perception alternates between different images presented to each eye.
  • The experiment studied binocular rivalry by showing a red image to one eye and a blue image to the other.

Variants and Related Words

• Binoculars (n): A handheld optical instrument with two telescopes, one for each eye, used for viewing distant objects.
  • She used binoculars to watch the birds from her window.
• Binocularly (adv): In a manner involving or using both eyes.
  • The task must be performed binocularly to be judged correctly.

Synonyms

• Two-eyed: Involving or using both eyes. (Less common, more literal)
• Stereoscopic: Relating to a technique for creating or enhancing the illusion of depth, typically involving binocular vision.

Related Phrases

(Note: As an adjective, 'binocular' itself does not form standard phrasal verbs. The related noun 'binoculars' is used in phrases.) - "a pair of binoculars": The standard phrase for the optical instrument. - He brought a pair of binoculars to the football game.

Adjective

1. relating to both eyes
   • binocular vision