Definition

1. Noun:
   • Nyctalopia: A medical condition of the eyes characterized by poor vision in low light or at night, especially during the transition from day to night. The name originates from the comparison to chickens, which also have poor night vision.

Usage Examples

• Noun:
  • Ông ấy bị quáng gà nên không lái xe vào buổi tối. (He has nyctalopia, so he doesn't drive at night.)
  • Triệu chứng quáng gà có thể do thiếu vitamin A. (The symptom of nyctalopia can be caused by a vitamin A deficiency.)

Advanced Usage

• Medical Context: The term is primarily used in medical or health-related discussions to describe the specific visual impairment.
  • Bác sĩ chẩn đoán bệnh nhân mắc chứng quáng gà. (The doctor diagnosed the patient with nyctalopia.)

Variants and Related Words

• Chứng quáng gà: The full term for the medical condition, often used interchangeably with "quáng gà".
• Bệnh quáng gà: Another common way to refer to the ailment, emphasizing it as a disease.
• Hemeralopia: This is the technical medical term sometimes referenced, though "nyctalopia" is the more precise opposite condition in standard international medical terminology. Note: In some historical or specific contexts (like the referenced French dictionary), "héméralopie" is used, but in modern medical English, "nyctalopia" is the standard term for night blindness.

Synonyms

• Night blindness: The common English term for "quáng gà".
• Nyctalopia: The formal medical term in English.

Related Idioms or Phrases

• (Mắt) như gà quáng: An idiom meaning "(eyes) like a night-blind chicken", used to describe someone who cannot see well in the dark or, figuratively, someone who is careless or fails to notice obvious things.
  • Trời tối mà không đèn, tôi đi như gà quáng. (It's dark without a light, I'm walking around like I have night blindness.)

noun

1. (med) nyctalopic