Definition

1. Adjective:
   • Having a form of color blindness characterized by an inability to see the color green or to distinguish between green and purplish-red: This is a specific type of color vision deficiency (deuteranopia or deuteranomaly) where the eye's green-sensitive cones are absent or malfunctioning.

Usage

• The term "green-blind" is a technical, medical, or descriptive adjective used to specify a particular type of color vision deficiency. It is less common in everyday conversation than the general term "color blind."
• It is typically used attributively (before a noun) or predictively (after a linking verb).

Examples

• Attributive use:
  • The test revealed he was green-blind, unable to distinguish the traffic light's green from its red.
  • The software includes a mode for green-blind users.
• Predictive use:
  • She is green-blind, so she sees the grass as a shade of brown or gray.
  • If you are green-blind, these two colored dots will appear identical.

Advanced Usage

• "Green-blindness" (noun): The condition of being green-blind.
  • His green-blindness made a career as an electrician impossible.

Variants and Related Words

• Deuteranopia (n): The complete absence of green-sensitive retinal cones, a more precise medical term for one form of green-blindness.
• Deuteranomaly (n): A reduced sensitivity to green light, a milder form of green-blindness where greens appear duller or shifted toward red.
• Color-blind / Colorblind (adj): The general term for any deficiency in color vision, which includes red-blindness (protanopia) and blue-yellow blindness (tritanopia) in addition to green-blindness.

Synonyms

• Deuteranopic: Having deuteranopia; completely green-blind.
• Color-deficient (specifically for green): A more modern and sometimes preferred term.

Notes on Meaning

• The term specifically denotes confusion between green and purplish-red or magenta. A green-blind person does not simply see the world in grayscale; they perceive colors, but their spectrum is compressed, making certain hues indistinguishable.
• It is one of the most common forms of inherited color vision deficiency.

Adjective

1. inability to see the color green or to distinguish green and purplish-red