White of the eye, tough fiberous coat

Goes all away around the eyeball

Middle layer, underneath that is called the choroid layer- had blood vessels that carry nutrient to the eye

Living tissue

No blood vessels

Clear part of the eye in front

Its curved, helps direct light 

Bend light rays taht come into the eye

Very smooth, round

The liquid in there - Aqueous Humor: 

Serves to parts:

1)Hold the shape of the cornea

2) Involved in refrating the light (changes the density & which causes the light rays to bend slighty)

Very soft

Coating of lens capsole around it that holds all this gel substance in there. (clear gel)

Above & below it are little ligaments that are attached to ciliary body which is actually ciliary muscles.

They can strech the lens & make it thinner or relax & it gets thicker

Responsible for out ability to focus on objects

They are actually tendons. 

Holds lens in position.

Know as: Old age eye

Lose flexiblty of the lens corrected by reading glasses

As we get older when it relaxes it doesn't thicken out as much, we then get reading glasses

Glasses

Improves far distance

Color part fo the eye

Allowing light to come in or dem it down

Can develop in the back of the lens

Start at the edge of the lens & work there way in 

Have short, blunt projections, & provde color vision.

7 million per eye in the back 

Cells

Much greater than rods

Have long, thin projections at thier ends, & provide black & white vision.

125 million per eye

Cells

*The majerity of our eye is black & white

Seeing out of the corner of the eye

Side vision

Tunnel vision - totally loses prereferral vision, rods shut down. 

Irregualr cornea or some sort 

Lack of sharpness of the image(blurred & double vision)

Tear drop lens - contacts won't work.

A one time surgery 

Sculp the outside by laser, shave it off, round, & smooth it

Produces products in that cornea: as you get older

Thin membrane layer 

Helps keep everything moist

Know as: Pink eye

Infection o fthe conjunctiva

Infected eye follicle

One of the eye lashes are infected

Irregular pressure inside of the eye

Dilate the eyes

Use the pressure test - blow air into the eye

Constant pressure to maintain the shape of the eye

Back Chamber

Vitreous Humor - Fluid inside it

Little pieces of edges of the retina or some of the tissue from up in the back side of the iris taht flake off & float around in there.

Little pieces of tissue, can come from anywhere in the eye. 

Dics on back

Point of fine vision

Made up of cones of retina

Optic nerve leaves the eye

Natural blind spot

Opposite image

Chemicals take awhile to dissipate

Bright light - White light

Get an image that is exactlywhat you saw

Nearsighted

Correct it: glasses or contact lens

Vision not so good: far away

Farsighted 

Minor amounts: left uncorrected

Larger amounts: convex lenses in eyeglasses or contact lenses

Not so good vision: close up