The vertebrate eye has two major functions : to form a light image on the .......... and then to convert that image into .......... ... in the carries the information to the visual cortex of the brain.

Explanation

To answer the question about the major functions of the vertebrate eye, we can break it down into two parts:

1. **Forming a Light Image**: The first major function of the vertebrate eye is to form a light image on a specific part of the eye. This part is called the **retina**. The retina is a light-sensitive layer at the back of the eye that captures light and begins the process of visual perception.

2. **Converting the Image**: The second major function is to convert the light image formed on the retina into **action potentials**. These action potentials are electrical signals that are generated in response to the light stimuli. The optic nerve then carries these action potentials to the **visual cortex** of the brain, where the information is processed and interpreted, allowing us to perceive images.

So, the complete answer to the question is:
The vertebrate eye has two major functions: to form a light image on the **retina** and then to convert that image into **action potentials**, which carry the information to the visual cortex of the brain.