near vision

Thân thiện

Definition

1. Noun:
   • The ability to see objects clearly at a short distance: "Near vision" specifically refers to the visual acuity required for tasks like reading, writing, or working with objects held close to the eyes, typically within a range of about 2 feet (60 centimeters) or less.

Usage

• "Near vision" is a technical term commonly used in medical, optometric, and everyday contexts to discuss eyesight for close-up activities.
• It is often contrasted with "distance vision" or "far vision."
• It is typically used as a non-count noun.

Examples

• Noun:
  • As people age, their near vision often deteriorates, a condition called presbyopia.
  • The optometrist tested both my distance and near vision during the eye exam.
  • Good near vision is essential for detailed crafts like embroidery.

Advanced Usage

• "to test/check one's near vision": to formally assess the clarity of sight at close range.
  • The doctor used a small card with printed text to check the patient's near vision.
• "near vision task": an activity that requires clear sight up close.
  • Reading a book is a common near vision task.

Variants and Related Words

• Near point (n): The closest point at which the eye can focus clearly. Related to the limit of near vision.
  • Her near point has receded, so she needs reading glasses.
• Presbyopia (n): The age-related loss of the eye's ability to focus on near objects, directly affecting near vision.
  • Presbyopia is the reason many adults require reading glasses for near vision.

Synonyms

• Close vision: A less common but synonymous term.
• Reading vision: Often used informally to describe the aspect of near vision used for reading.

Antonyms

• Distance vision: The ability to see objects clearly at a far distance.
• Far vision: Synonymous with distance vision.

Học thuật

Noun

1. vision for objects 2 feet or closer to the viewer