Definition

1. Noun:
   • A visual impairment in which a single object is perceived as two separate images: "Double vision" is a medical condition where the eyes fail to work together correctly, causing the brain to receive two different images of the same object. This condition is also known medically as diplopia.

Usage Examples

• Noun:
  • After the accident, he experienced double vision and had to wear an eye patch.
  • Double vision can be a symptom of a serious neurological problem.
  • The doctor asked if the double vision disappeared when she covered one eye.

Advanced Usage

• Medical Context: Often used in clinical descriptions to diagnose underlying issues with eye muscles, nerves, or the brain.
  • The patient presented with acute onset of horizontal double vision.
• Informal/Figurative Use: Rarely, used metaphorically to describe a confused or overlapping perception of a situation.
  • Trying to understand the two conflicting reports gave me a kind of mental double vision.

Variants and Related Words

• Diplopia (n): The formal medical term for double vision.
  • The neurologist diagnosed him with binocular diplopia.
• Monocular diplopia (n): A specific type where double vision persists even when one eye is closed, often due to a problem within the eye itself (e.g., cataract).
• Binocular diplopia (n): The most common type, where double vision occurs only when both eyes are open and disappears when one is covered, indicating a misalignment issue.

Synonyms

• Diplopia: The direct medical synonym.
• Ghosting: A less formal term sometimes used, particularly in contexts like seeing a faint secondary image.

Related Phrases

• To have double vision: The standard phrase to describe experiencing the condition.
  • If you start to have double vision, you should seek medical attention immediately.
• To see double: A common informal expression with the same meaning.
  • After a few drinks, he began to see double.

Related Idioms

• None directly associated: There are no common idioms that use "double vision" as a fixed phrase with a figurative meaning. The term is primarily used in its literal, medical sense.

Noun

1. visual impairment in which an object is seen as two objects
   • diplopia often disappears when one eye is covered