The Theoritical
Basis
Eyes are organs that detect light and convert it
into electro-chemical impulses in neurons. The simplest photoreceptor cells in conscious
vision connect light to movement. In higher organisms the eye is a complex optical system which
collects light from the surrounding environment, regulates its intensity
through a diphragm, focuses it through an
adjustable assembly of lenses to form an image,
converts this image into a set of electrical signals, and transmits these
signals to the brain through complex
neural pathways that connect the eye via the optic verve to the visual cortex and other areas of the brain.
In this
experiments we will show and explain how pupil can work in the bright place and
dark place. And we will explain about myopia and hypermetropia. When we are in
the bright place, our pupil will become smaller. When we are in the dark place,
our pupil will become bigger. Myopia is a condition of the eye where the light
that comes in does not directly focus on the retina but in front of it. This
causes the image that one sees when looking at a distant object to be out of
focus, but in focus when looking at a close object. Hypermetropia the technical name for a problem that may happen with the human eye. It is commonly
called being long sighted. Hyperopia can make a person unable to see nearby
objects clearly because they appear blurred, while faraway objects are clear.
Tools and Material
1. Camera
2. Flashlight
3. Mobile
Phone
4. Laptop
5. Book
6. Ipad
Step of
Experiments
1. First, we
record eyes when we are in the dark place
2. Second, we
record eyes when we are in the bright place
3. Third, we
record example of myopia in the daily life
4. And then we
record example of hypermetropia in the daily life
The Result
From Our Experiments
1. When we are
in the bright place our pupil are become smaller because there are many light
that come into our eyes. But when we are in the dark place our pupil are become
bigger, it is because there are minimum light in the dark place.
2. Myopia is
eyes desease that cause patients can’t see object from distant. That’s because
the shadow fell in front of retina. So, a person who have myopia disease must
use concave lens glasses.
3. Hypermetropia
is eyes desease that cause patients can’t see object from near. Hypermetropia usually occur with elder
people. Hypermetropia caused the shadow fall behind retina. A person who have
hypermetropia disease must use convex lens glasses.
Conclusion
So, from our experiments we can
take the conclusion when we are in the bright place our pupil became smaller,
but when we are in the dark place our pupil became bigger.
A person who have myopia disease
must use concave lens glasses because they can’t see object from distant. And a
person who have hypermetropia disease must use convex lens glasses because they
can’t see object from near.
You can see our video project at http://www.youtube.com/watch?v=rgsq2ltr6rc
Happy Watching :D
By: Siti Almira Dania 116120187
Rizqa Debby Asy 116120184
M. Dwigusta Cahya 116120170
You can see our video project at http://www.youtube.com/watch?v=rgsq2ltr6rc
Happy Watching :D
By: Siti Almira Dania 116120187
Rizqa Debby Asy 116120184
M. Dwigusta Cahya 116120170
