Eye know this!
What are the layers of the eye?
Fibrous, Vascular, Retina
What does the Choroid do?
It absorbs light and contains lots of blood vessles supplying the eye with nutrients.
Hole that allows light into the eye
Pupil
How does the parasympathetic nervous system effect the pupil?
It constricts the pupil making it smaller
This condition effects the way people see color and it is more comon in males
color blindness
What structure provides structure, shape, and protection for the eye?
Sclera
These require a lot of light to be stimulated and provide us with details and color.
Cones
Only part of the eye that can change shape
Lense
How does the sympathetic nervous system effect the pupil?
The pupil dialates
Inflamation of clear membrane covering eye, caused by bacterial infection.
Conjunctivitis
3/4 of light focus is allowed in by this structure
Cornea
These help us see in dim light and provide peripheral vision.
What does the Ciliary body do?
Connect to the lense and change its shape
Where are visual impulses being interpreted?
The occipital lobe
Clouding of the eye's natural lens usally caused by aging causes blurry, dim, or yellowed vision
Cataracts
Without this, our eyes would be pretty dry, and you would always feel like you have something in your eyes.
Conjunctiva
What does the macula lutea do?
It provides sharp focus of objects
This is the space between the cornea and lense
Anterior cavity
What do the ganglion cells do? What do they form?
They carry impulse to the brain and form the optic nerve
Diseases that damages the optic nerve, often due to high eye pressure, leading to permanent, irreversible vision loss or blindness
Glaucoma
This secretes tears and is superior and lateral to the eye.
Lacriminal Apparatus
This contains only cones and is a point size pit in the middle of the Macula lutea.
Fovea
What substance helps maintain intravascular pressure and where is it found?
Vitreous humor found in the posterior cavity
What transmits singnals to the ganglion cells?
Bipolar neurons
Leading cause of vision loss in people over 50, damages the macula causing blurred/distorted vision and central blind spots
Macular degeneration