Q:

What are the main functions of the eye?

A:

Quick Answer

The main function of the eye is to convert light into electrochemical impulses that the brain can interpret as visual images. The various parts of the eye perform different functions that contribute to this purpose.

Know More
What are the main functions of the eye?
Credit: Philippe Bigard OJO Images Getty Images

Full Answer

The eye is roughly analogous to a self-regulating, self-cleaning camera. The lens of the eye bends and refracts light, directing it toward the retina. The iris contracts or dilates to control the amount of light entering the eye. The cornea provides a clear shell that protects the eye without interfering with vision. The tear ducts and the eyelids work together to lubricate the eye and to wash away dust and other particles that might irritate or damage the eye.

Learn more in Vision

Related Questions

  • Q:

    What is a rodding eye?

    A:

    A rodding eye is a removable cover on the opening within a drain pipe that helps remove an obstruction by drain rods. It is also called a "cleaning eye" or "access eye." A rodding eye can also be defined as a pipe fitting that provides access for cleaning and inspection.

    Full Answer >
    Filed Under:
  • Q:

    What does the cornea do?

    A:

    As described by Healthline.com, the cornea's main function is to refract light entering the eye. St. Luke's Cataract & Laser Institute adds that the refraction of the cornea provides two-thirds of the human eye's focusing power.

    Full Answer >
    Filed Under:
  • Q:

    What is the function of the iris in the eye?

    A:

    According to the University of Michigan Kellogg Eye Center, the function of the iris in the eye is to control the amount of light that reaches the retina. It does this by changing the size of the pupil, the transparent window that allows light into the eye's interior.

    Full Answer >
    Filed Under:
  • Q:

    What does the song "His Eye Is on the Sparrow" mean?

    A:

    "His eye is on the sparrow" is meant to be a reminder that God watches over people even in times of persecution or difficulty. It is based on the parable of the Sparrows, which is found in the New Testament book of Matthew in the Holy Bible. In the story, Jesus says that sparrows cannot lose their ability to fly unless God wills it.

    Full Answer >
    Filed Under:

Explore