Definition

Noun: - An impairment of the sense of sight: A condition or disorder that negatively affects the ability to see clearly or correctly.

Usage

The term "vision defect" is a formal or medical term used to describe a broad range of conditions that result in imperfect eyesight. It is typically used in clinical, optometric, or general descriptive contexts.

Examples

• Noun:
  • Myopia, or nearsightedness, is a common vision defect.
  • The eye examination revealed a minor vision defect that can be corrected with glasses.
  • Some vision defects are present from birth, while others develop with age.

Advanced Usage

• "Correctable vision defect": A sight impairment that can be fixed, often with lenses or surgery.
  • Astigmatism is usually a correctable vision defect.
• "Congenital vision defect": A sight impairment that is present from birth.
  • The child was diagnosed with a congenital vision defect.

Variants and Related Words

• Visual impairment (n): A more common contemporary term for a defect in vision.
  • The school has resources for students with a visual impairment.
• Refractive error (n): A specific type of vision defect where the eye does not bend light correctly to focus an image on the retina.
  • Glasses are prescribed to correct a refractive error.

Synonyms

• Eyesight problem: A less formal term for an issue with seeing.
• Visual disorder: A term emphasizing the medical aspect of the condition.

Related Phrases

• Defect of vision: An alternative phrasing with the same meaning.
  • The optician specializes in diagnosing defects of vision.

Notes

"Vision defect" is a compound noun. As per the instruction, the primary definition and examples focus on this exact term. It is important to distinguish it from specific conditions like "blindness" or "cataract," which are types of vision defects but are not synonymous with the general term itself.

Noun

1. impairment of the sense of sight