听下面一段较长对话，回答以下小题。

【小题1】What is the purpose of the tool?

A．To restore blind people’s vision.

B．To give blind people perfect vision.

C．To prevent blindness from happening.

【小题2】What is in the glasses?

A．A computer chip.

B．A video camera.

C．A special pen.

【小题3】What does the man say about the tool?

A．Its working process is very fast.

B．It can help people who are born blind.

C．The glasses send pictures to people’s eyes.