EYE PHYSIOLOGY<br />GROUP MEMBERS; <br />Lama, arjome<br />Castro, Lourdes<br />Calion, Yvonne<br />Soriano, Amy<br />Tapa...
VISION<br />
Basic Anatomy<br />the EyE is…<br />- very complex organ <br />	- approximately 1 inch (2.54 cm) wide<br />	-1 inch deep a...
Three different layers<br />1. external layer<br />	-formed by the sclera and cornea<br />2. intermediate layer<br />	-div...
Three chambers of fluid:<br />1. Anterior chamber<br />	-(between cornea and iris)<br />2. Posterior chamber<br />-(betwee...
Aqueous Humour<br />The aqueous humour is a jelly-like substance located in the anterior chamber of the eye.<br />Choroid<...
Cornea<br />-a strong clear bulge located at the front of the eye.-has a radius of approximately 8mm.-contributes to the i...
Optic Nerve<br />-second cranial nerve and is responsible for vision.Each nerve contains approx. one million fibres transm...
Pupil<br />-the aperture through which light the images we "see" and "perceive" - enters the eye. <br />-formed by iris<br...
Macula: light-sensitive cells<br />
Extrinsic Muscle<br />
Intrinsic Muscle<br /><ul><li>iris sphincter
Upcoming SlideShare
Loading in …5
×

Vision anatomy 1

1,155 views

Published on

Published in: Health & Medicine
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,155
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
51
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Vision anatomy 1

  1. 1. EYE PHYSIOLOGY<br />GROUP MEMBERS; <br />Lama, arjome<br />Castro, Lourdes<br />Calion, Yvonne<br />Soriano, Amy<br />Tapay, Windy<br />
  2. 2. VISION<br />
  3. 3. Basic Anatomy<br />the EyE is…<br />- very complex organ <br /> - approximately 1 inch (2.54 cm) wide<br /> -1 inch deep and 0.9 inches (2.3 cm) tall.<br />
  4. 4. Three different layers<br />1. external layer<br /> -formed by the sclera and cornea<br />2. intermediate layer<br /> -divided into two parts: anterior (iris and ciliarybody) and posterior (choroid) <br />3. internal layer/sensory part of the eye<br />-the retina<br />
  5. 5. Three chambers of fluid:<br />1. Anterior chamber<br /> -(between cornea and iris)<br />2. Posterior chamber<br />-(between iris, zonule fibers and lens) <br />3. Vitreous chamber<br />-(between the lens and the retina). <br />The first two chambers are filled with aqueous humor whereas the vitreous chamber is filled with a more viscous fluid, the vitreous humor.<br />
  6. 6. Aqueous Humour<br />The aqueous humour is a jelly-like substance located in the anterior chamber of the eye.<br />Choroid<br />The choroid layer is located behind the retina and absorbs unused radiation.<br />CiliaryMuscle<br />The ciliary muscle is a ring-shaped muscle attached to the iris. It is important because contraction and relaxation of the ciliary muscle controls the shape of the lens.<br />Zonules<br />The zonules (or "zonulefibers") attach the lens to the ciliary muscles.<br />Different parts of the eye<br />
  7. 7. Cornea<br />-a strong clear bulge located at the front of the eye.-has a radius of approximately 8mm.-contributes to the image-forming process by refracting light entering the eye.<br />Fovea<br />The fovea is a small depression (approx. 1.5 mm in diameter) in the retina.This is the part of the retina in which high-resolution vision of fine detail is possible.<br />Hyaloid<br />The hyaloidcanal divides the aqueous humour from the vitreous humour.<br />Different parts of the eye<br />
  8. 8. Optic Nerve<br />-second cranial nerve and is responsible for vision.Each nerve contains approx. one million fibres transmitting information from the rod and cone cells of the retina.<br />Lens<br />-a flexible unit that consists of layers of tissue enclosed in a tough capsule.<br />Papilla<br />-"blind spot“<br />Sclera<br />The sclera is a tough white sheath around the outside of the eye-ball.-"white of the eye".<br />Different parts of the eye<br />
  9. 9. Pupil<br />-the aperture through which light the images we "see" and "perceive" - enters the eye. <br />-formed by iris<br />Retina<br />-The retina contains photosensitive elements (called rods and cones) that convert the light they detect into nerve impulses that are then sent onto the brain along the optic nerve. <br />Iris<br />-the coloured part of the eye.<br />-function is to adjust the size of the pupil to regulate the amount of light admitted into the eye.<br />Vitreous Humour<br />Different parts of the eye<br />
  10. 10. Macula: light-sensitive cells<br />
  11. 11. Extrinsic Muscle<br />
  12. 12. Intrinsic Muscle<br /><ul><li>iris sphincter
  13. 13. Iris dilator muscles
  14. 14. ciliarymuscle</li>

×