biologie

Image formation in the eye
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Slide 1: Slide
BiologieSecundair onderwijs

This lesson contains 14 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 50 min

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