Question

Write a note on Colour blindness.

Hint:

While there is no cure for color blindness, color correction lenses and apps can help individuals perceive colors more accurately.

Answer 1

Step 1: Definition of Colour Blindness.
Colour blindness, also known as color vision deficiency, is a visual impairment where individuals are unable to perceive certain colors or differences between colors. It is most commonly inherited and affects a large proportion of the male population.
Step 2: Causes of Colour Blindness.
1. Genetic Cause: The most common cause is a genetic mutation in the X chromosome, leading to an inability to produce the photopigments needed for color detection. 2. Types of Colour Blindness: - Red-Green Color Blindness: The most common type, where individuals cannot distinguish between red and green hues. - Blue-Yellow Color Blindness: Less common, where individuals have difficulty distinguishing between blue and yellow hues. - Total Colour Blindness: A rare condition where individuals cannot perceive any color and see everything in shades of grey.
Step 3: Conclusion.
Colour blindness is a hereditary condition that affects the ability to perceive colors, with red-green color blindness being the most common form.
Final Answer: \[ \boxed{\text{Colour blindness is a condition where individuals cannot perceive certain colors, commonly due to a genetic mutation.}} \]