1 / 20

The Eye: Structure

The Eye: Structure . 1. Sclera . White part of the eye Is made of tough tissue Protects the inner workings of the eye and gives the eye its shape. 2. Aqueous Humor. A clear, watery fluid Circulates in the front part of the eye, maintaining a constant pressure inside the eye. . 3. Cornea .

aimon
Télécharger la présentation

The Eye: Structure

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Eye: Structure

  2. 1. Sclera • White part of the eye • Is made of tough tissue • Protects the inner workings of the eye and gives the eye its shape

  3. 2. Aqueous Humor • A clear, watery fluid • Circulates in the front part of the eye, maintaining a constant pressure inside the eye.

  4. 3. Cornea • The curved, clear, outer surface • Covers the iris and pupil

  5. 4. Pupil • Is the opening in the center of the iris • The size of the pupil: • determines the amount of light entering the eye • controlled by circular muscles

  6. 5. Iris • The colored part of the eye • Made of circular muscles • Controls the size of the pupil

  7. 6. Lens • A clear convex lens • Is responsible for focusing light to form an image on the retina • Can change shape to focus on nearby and distant objects

  8. 7. Vitreous Humor • A clear, jelly-like substance • Fills the eye behind the lens • Holds the structures of the eye in place • Maintains the shape of the eye

  9. 8. Optic Nerve • A thick bundle made of millions of neurons • Carries visual information from the retina to the brain.

  10. 9. Retina • A thin, translucent, light-sensitive tissue made of specialized cells called rods and cones • Receives images formed by the lens

  11. 10. Optic Disc • The point where the optic nerve enters the retina • NOT sensitive to light • Known as the “blind spot”

  12. 11. Tapetum • A shiny layer that lines the area behind the retina of many animals • Helps make animal eyes visible in the dark • Allows them to see better at night

  13. Vision

  14. Corrective Lenses (Glasses & Contacts) • Near Sighted • Far Sighted

  15. Color Blindness • Your eyes have special cells called rods and cones • Rods – Light sensitive • Cones – Color Sensitive

  16. Color Blindness • There are three main kinds of color vision defects. Red-green color vision defects are the most common. This type occurs in men more than in women. The other major types are blue-yellow color vision defects and a complete absence of color vision.

  17. Color Blindness • Most of the time, color blindness is genetic. There is no treatment, but most people adjust and the condition doesn't limit their activities.

  18. LASIK • 1. Create a flap of corneal tissue • 2. Remodel the cornea using the laser • 3. Reposition the flap

More Related