1 / 14

Chapter 2

Chapter 2. The Human Eye. Physics Review. Light: Electromagnetic radiation Wavelength (nm) determines quality Why light? Reliable Prevalent Informative. The Head. Eye placement: Lateral vs. Frontal Skull: Orbit Eye Movement 6 extra-ocular muscles: Conjugate Vergence Eyelids

kat
Télécharger la présentation

Chapter 2

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. Chapter 2 The Human Eye

  2. Physics Review • Light: Electromagnetic radiation • Wavelength (nm) determines quality • Why light? • Reliable • Prevalent • Informative

  3. The Head • Eye placement: • Lateral vs. Frontal • Skull: Orbit • Eye Movement • 6 extra-ocular muscles: • Conjugate • Vergence • Eyelids • Tears

  4. Eye Function • What is an image? • Image formation = reversing light divergence • Optical Power of… • 1) cornea: 2/3rds of optical power • 2) lens: accommodation

  5. Eye Structure • Three layers: • Protecting: Fibrous Tunic • Nourishing: Vascular Tunic • Detecting: Retina

  6. Fibrous Tunic • Sclera • Cornea

  7. Out of Focus

  8. Problems with Lens • Presbyopia: • Astigmatism

  9. Vascular Tunic • Choroid • Pigment epithelium • Anterior Chamber • Aqueous humor • Lens and pupil

  10. Glaucoma

  11. Retina • Photoreceptors • Landmarks: • Macula • Optic Disk

  12. Photoreceptors Paul Bunyan Ate His Rice

  13. Opsin Photopigments • Two components • Opsin: large protein, 3 types • Retinal (vitamin A) • Phototransduction Retinal

  14. Wavelength Sensitivities

More Related