What type of cells are lacking in a person whi is colour blind ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Color Blindness**: Color blindness is a condition where a person has difficulty distinguishing between certain colors. This condition is often due to the absence or malfunction of specific cells in the eye.

2. **Role of the Retina**: The retina is the part of the eye that receives light and converts it into neural signals. It contains light-sensitive cells that play a crucial role in vision.

3. **Types of Light-Sensitive Cells**: There are two main types of light-sensitive cells in the retina:
- **Cone Cells**: These cells are responsible for color vision. They allow us to perceive different colors by detecting various wavelengths of light.
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