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biologie
Image formation in the eye
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Biologie
Secundair onderwijs
This lesson contains
14 slides
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interactive quizzes
and
text slides
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Lesson duration is:
50 min
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Items in this lesson
Image formation in the eye
Slide 1 - Slide
the retina
the light sensitive layer of the eye
two layers:
-pigmented layer
-neural layer
Slide 2 - Slide
the retina
rods
-non color vision
-low light vision
cones
-color vision
-bright licht vision
-very detailed
Slide 3 - Slide
photoreceptors
=the light sensing nerve cell located in the retina
(rods and cones)
Slide 4 - Slide
the function
captures the light
helps transate it into the images you see
the cells change the light energy into an elecrical signal
the signal->your optic nerve->into your brain->becomes a picture of the world that we see
Slide 5 - Slide
what detects the rods cells
A
bright light
B
low-light and non-color vision
C
bright light and color vision
D
low-light
Slide 6 - Quiz
what are the 2 layers of the retina
A
photoreceptor layer and the neural layer
B
pigmented layer and the green layer
C
pigmented layer and the neural layer
D
cones layer and the blue layer
Slide 7 - Quiz
short-sighted vision
medical term : myopia
closer objects are clear
the eyeball grown to long (from front to back)
gets worse during adolescene (puberteit)-> gets better during early adulthood
Slide 8 - Slide
long-sighted vision
medical term: hyperopia
closer object are blurry
it happens when the eyeball is too short
most children are born with it->it improves
Slide 9 - Slide
for both of them
refractive erros (vision problems that makes it hard to see clearly)
easily corrected with glasses or contact lenses
common signs
-tired eyes
-squiting eyes to see clearly
-eye strain and headaches
Slide 10 - Slide
How many procent of Americans are
nearsighted
A
60%
B
30%
C
40%
D
70%
Slide 11 - Quiz
What is a different word for hyperopia
A
myopia
B
long-sigted vision
C
near-sighted vision
D
rods
Slide 12 - Quiz
ciliary muscle
=muscle that controls the movement lens/pupil
iris=colored part of the eye
bij aanspanning van de ciliary muscle ontspant de lens en is het mogenlijk om dichtbij te zien
bij ontspanning van de ciliary muscle spant de les aan en is het mogelijk om ver te zien
Slide 13 - Slide
what are common signs of long-sighted and near-sighted vision
Slide 14 - Open question
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