Device May Help Blind People See

The main idea of this passage is

• scientists in Belgium are concerned about the visually impaired.

• scientists have tested their device on two patients.

• scientists invented a device to help blind people see.

• many people are blind from a damaged retina.

Which of the following does not necessarily support the main idea?

• The scientists are in Belgium.

• The device includes special glasses for the patient to wear.

• Scientists need to implant a device behind the patient's eye.

• The device sends messages to the optic nerve.

Before the device stimulates the optic nerve,

• a visual message goes to the brain.

• the person is aware of what he or she is seeing.

• a camera is mounted on glasses.

• all of the above.

The retina

• sends messages to the brain.

• picks up visual information as light.

• determines what color eyes you have.

• protects the eye.