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The Human Eye

For an ISP Presentation
by

Lisa Wu

on 13 May 2016

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Transcript of The Human Eye

The Iris is the supreme ruler of the amount of light entering your eye. It is also the protecter of the Retina, which we will get to later. So maybe the light that goes into your eye is who/what you are ruling. When there are not too many lights to rule, you are big! But when there are more and more lights, you go smaller and close the opening so not too many lights enter and damage the Retina.
What this part is about
This part is about what the title says; Parts of the Human Eye. In this part, you will learn about the different parts of the human eye. And there are many more parts than just the iris, pupil or lens. And as I learned, the eyelashes are not parts of the human eye.
The Iris
-Retina's two different types of light
sensors (rods and cones)
-Rods and cones detect light, they produce nerve impulses
- Nerve impulses travel up optic nerve
- Follows up to largest part of brain (cerebrum)
- Nerve impulse goes to back of cerebrum; the visual part
- Cerebrum reconstructs image
- Brain uses different views
- Produces 3-D picture of world
- Allows you to judge distance
This part of my prezi will probably be the most useful
part to you. This part will be about how to protect your eyes. Protecting your eyes are important because well, you need to see.
Parts of the Eye
How the Eye Works
Protecting your Eyes
Eye Colour

Differences and Similarities
Between Human and Animal Eyes
The Human Eye
Ways to Protect Your
Eyes
sde
Hello everybody! My ISP will be about...
The Human Eye
. I will
have six subtopics which will be... parts of the eye, how the eye works, protecting your eyes, eye colour, differences and similarities
between human and animal eyes, and lastly, how important eyes
are. I hope you enjoy it.

- Use sunglasses on sunny days
- Don't look directly at the sun
- Don't look at bright lights in general
- Don't read in the dark, or your eyes will get damaged
- When your hands are dirty, don't rub your eyes, or dirty things will get into your eyes
- Try not to get any dust in your eyes
- Wear safety goggles when working in construction sites because of dust, and sharp shards
- Is you wear contact lenses, wash them thoroughly before
wearing them, and also wash your hands before washing the
contact lenses
The blind spot is the part of
the retina, just around where
this circle is. But in this area,
there are no sensors. So in this
area, you can't really see
anything.
This is the optic nerve. It carries nerve impulses to
and from the brain. So in a way, it is like a messenger.
The Pupil
The pupil is a hole that lets the light in.
The Cornea
T
he cornea is a transparent area in front of your eye that helps focus light. It is somewhat like a shield.
The Cilliary muscle
Vitreous Humor
The vitreous humor is a transparent sort of gel that fills in between the area of your retina and lens, which is like
all this pink space.
The fovea is a part where there are no blood vessels. This part helps you see detail better. So this part helps you with things like reading.
Differences
Similarities
A first very obvious difference: Appearance
What this Part is About
This part will be about the most common eye colour to the least common and how you even get different eye colours from your parents.
Below, the chart shows...
- The most common eye colour to least
common eye colour
Here is a chart to show the likelihood of a baby's eye colour.
- Bats rely more on ears than eyes
- Some nocturnal creatures are similar; They can't see,they just hear
- Humans don't live in dark caves or hunt at night
- We actually need to see in the daytime
Thanks for watching my and listening to my ISP!!!
How Important Eyes are
- Writing too big
- Different thickness
- Wrong use of stationary
- Writing slanted
The Aqueous Humor
The aqueous humor is a watery liquid that supplies nutritions for the cornea and lens because they don't have their own blood supply.
- Light rays enter the eye
- Met by cornea and lens
- Retina focuses on light ray; cornea and lens helps that happen
- Ciliary adjusts thickness of lens (Depends on close or far away object)
-Iris controls amount of light entering
-(At the same time) muscles adjust the pupil
- Larger= welcoming more light
-Smaller= prevent damage to the retina
Comic-me is right. It would be hard to get past life without eyesight. For the typing part, you might thinking, "Yeah, but some people can type without looking at the keyboard." Yes, that is true, but what if you were to correct something? You'd have to think back to what you typed before and count the number of backspaces you need. And I'm pretty sure nobody wants to do that.
The lens help make a clear image on the retina. If you have glasses, it is the lens where you need glasses.
The conjunctiva is a barrier
that lets only some certain things pass. That is also known as a membrane. It is spaced in the eyelids.
The sclera is the whites of your eyes. It is also a protection for injuries and provides an attachment for a muscle that allows you to move your eyeball.
- 120 rods, 6,000,000 cones
- Rods work with dark lights
- Cones work with bright lights and colour
- Most cones in fovea (show more detailed images there)
- Three different cones (detect red, green and blue)
Here is a comparison
- What we use eyes for: To see
- Both have irises, lens, pupils, corneas and scleras (some parts are the same)
- Only few types of monkeys and birds see things the same like us
-Some animals have the same amount of eyelids and eyes as us

How we see colour
A less obvious difference: how important eyes are to us than to other animals
- Some animals can't even see colours
- Some animals can see colour better
- Some animals can see better than us in
the day than the night
The way our eyes are constructed
- Animals like insects have compound eyes
- Compound eyes are many different eyes all formed into one
- Dragonflies (for example) can see different things at
the same time
The number of eyes we have
- Spiders: 8 eyes
- Bees: 5 eyes
- Scallops: over 100 hundred
- Humans: 2
The number of eyelids we have
- Humans: 1-2
- Insects: 0
- Fish: 0
- Dogs: 3
Horses: 3
Rabbits: 3

And now... The Kinesthetic Activity!

First, get into groups of 2, 3 or 4. Then, get a bingo board and 30 pieces. Next, review the pictures on the screen: you will get 30 seconds.


How to play:
1. First, I will point to a random part of the Human Eye diagram OR ask a question
2. If you think you have the name of the part or the answer to the question on your board, you put a checker on it.
3. Once you have a whole row, column or diagonal, you say “BINGO!”
4. I will first check to see if you put the pieces on the right spots.
5. If you didn’t, your board gets CLEARED!

The top 3 groups gets a prize and a round of applause!
If your group didn’t win anything, you get a pat on the back from yourself and a mini prize.

Now lets begin!
Kinesthetic Activity
Kinesthetic Activity
The Kinesthetic Activity PART 2
Part 2 is... JEOPARDY!!!
Stay in the groups you were for bingo
If you were top 3 in bingo, you will not participate in jeopardy
if you pass a question, the group after you gets to answer it, but they will not have another turn if they answer the question right
it will be okay if they can't answer a question another group has passed
Full transcript