Which type of retinal cells respond to brightness of light ?

Explanation

### Step-by-Step Solution:

1. **Understanding the Retina**: The retina is a layer of tissue located at the back of the eye. It contains light-sensitive cells that play a crucial role in vision.

2. **Types of Retinal Cells**: There are two main types of photoreceptor cells in the retina: cone cells and rod cells.

3. **Function of Cone Cells**: Cone cells are responsible for detecting color. They function best in bright light and are essential for color vision.

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