Rods and cones are two types of photoreceptor cells located in the retina of the eye, responsible for converting light into neural signals that can be interpreted by the brain.
1. **Rods**:
- **Function**: Rods are primarily responsible for vision in low-light conditions (scotopic vision). They are highly sensitive to light but do not detect color.
- **Number**: There are about 120 million rods in the human retina.
- **Distribution**:


