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The Human Eye

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Rajdeep Sidhu

on 28 May 2015

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Transcript of The Human Eye

Layers of The Eye Ball
Colour Blindness
The human eye contains rods which detect levels of light (dark versus bright)
It also has three kinds of cones which distinguish among the different colors.
If none of the cones are functioning, then a person has gray scale vision.
If the cones are semi-functional, then the person sees colors, but they are muted.
Different Types of Colour Blindness
The outer layer, formed by the cornea and sclera
The middle layer, holding the primary blood supply for the eye and containing the iris and pupil
The inner layer, comprised of the retina
Anterior chamber, between the cornea and iris
Posterior chamber, between the iris and the lens
Vitreous chamber, between the lens and the retina
The Eye
What Is an Optical Illusion?
An optical illusion is an image that we observe differently compared to what it really is
They use color, light and patterns to create images that can be deceptive or misleading
Information gathered by the eye is processed by the brain, which creates a perception that in reality, does not match the true image.
Optical illusions occur because our brain is trying to interpret what we see and make sense of the world around us.
Works Cited
Images
Elephant Illusion. 2006. Mighty Optical Illusions. By James Dean. Web. 14 May 2015.
Hermann, Ludimar. Grid Illusion. 1870. Wikipedia. Web. 14 May 2015.
Fisher. Fisher's Mother Father Daughter Illusion. 1968. Weird Optics. Web. 14 May 2015.
Ebbinghaus, Hermann. Ebbinghaus Illusion. 1901. Wikipedia. Web. 14 May 2015.
Kitaoka, Akiyoshi. Crawling Snakes Illusion. N.d. Moving Eye Illusions. Web. 14 May 2015.
Kitaoka, Akiyoshi. Rice Waves. N.d. Moving Eye Illusions. Web. 14 May 2015
Adelson, Edward H. Checker Shadow Illusion. 1995. Wikipedia. Web. 14 May 2015.
Normal Vision. N.d. Colour Blind Awareness. Web. 20 May 2015.
Deuteranopia. N.d. Colour Blind Awareness. Web. 20 May 2015.
Protanopia. N.d. Colour Blind Awareness. Web. 20 May 2015.
Tritanopia. N.d. Colour Blind Awareness. Web. 20 May 2015.
Monochromy. N.d. Colour Blind Awareness. Web. 20 May 2015.
Blindness. N.d. Wikipedia. Web. 20 May 2015.
Institute, National Eye. Glaucoma. 2008. Leading Causes of Blindness. Web. 20 May 2015.
Institute, National Eye. Cataracts. 2008. Leading Causes of Blindness. Web. 20 May 2015.
Lederman, Susan. Canadian Currency Tactile Feature. N.d. Wikipedia. Web. 21 May 2015.
You’re Probably Not Expecting Kids to Run out on the Road. 2010. Vancouver. 3D OPTICAL ILLUSION PAINTED ON STREET TO MAKE DRIVERS SLOW DOWN. By Marc. Web. 21 May 2015.
Laser Eye Surgery. 2014. Perfect Vision. Web. 21 May 2015.
Structure Of The Human Eye. N.d. BioNinja. Web. 20 May 2015.
Human Eye. N.d. Vision Express. Web. 20 May 2015.
Elephant Legs Illusion
Hermann Grid Illusion
Mother Father Daughter Illusion
Ebbinghaus Illusion
Crawling Snakes Illusion
Rice Waves Illusion
Checker Shadow Illusion
Checker Shadow Illusion Continued
Deuteranopia
Protanopia
Tritanopia
Monochromacy
Blindness
Blind people see nothing (black).
The blind have no visual light perception
Blindness can be caused by:
Genetics or can be caused by an issue that happens to a child before it is born
Injury/accidents
Diseases such as: Glaucoma and Cataracts

Glaucoma
Glaucoma damages the eye's optic nerve
Pressure(fluid) increases inside of the eye
Cataracts
Symptoms:
Blurry vision 
Colors that seem faded 
Glare 
Not being able to see well at night 
Double vision 
Frequent prescription changes
Treatment:
New glasses, brighter lighting, anti-glare sunglasses, or magnifying lenses can help
Surgery that replaces cloudy lense with an artificial lense
Treatment:
No cure at the moment
Eye drops and surgery can be given to reduce symptoms and chances of going blind
The Human Eye
By: Rajdeep Sidhu
Myopia
Hyperopia
Society and The Human Eye (Blindness)
Relation To Society
Laser Eye Surgery
It is utilized in order to treat near and far sightedness, astigmatism, and treatment for cataracts.
Makes permanent changes to the cornea
Two types: LASIK and PRK
IS BLINDNESS GENETIC?
WHAT IS THE DIFFERENCE BETWEEN MYOPIA AND HYPEROPIA?
NAME ONE RISK INCLUDED IN LASER EYE SURGERY (LASIK OR PRK) BUT YOU HAVE TO MENTION WHICH ONE.
TRUE OR FALSE: RED-GREEN COLOUR BLIND PEOPLE ARE MORE ABLE TO FIND CAMOUFLAGED OBJECTS IN NATURAL SETTINGS.
WHAT LENS IS PLACED IN FRONT OF A HYPEROPIC EYE, WHICH HELPS THE RETINA CORRECTLY FOCUS?
WHAT LENS IS PLACED IN FRONT OF A MYOPIC EYE, WHICH HELPS THE RETINA CORRECTLY FOCUS?
Sources
"Blindness." KidsHealth. Ed. Jonathan H. Salvin. The Nemours Foundation, 01 Oct. 2013. Web. 26 May 2015.
"Blindness." Wikipedia. Wikimedia Foundation, 24 May 2015. Web. 26 May 2015.
"Canadian Currency Tactile Feature." Wikipedia. Wikimedia Foundation, 25 July 2014. Web. 26 May 2015.
DiGiuseppe, Maurice, and Douglas Fraser. Biology 11: University Preparation. Toronto: Nelson Education, 2011. Print.
"Eyes: 15 Facts You Probably Didn't Know About Them." Eyes: 15 Fun Facts You Probably Don't Know. Vision Service Plan, 2015. Web. 26 May 2015.
"Important Things To Know About Laser Eye Surgery With The Lasik." Perfect Vision. N.p., 25 June 2014. Web. 26 May 2015.
"Laser Eye Surgery." Government of Canada, Health Canada and the Public Health Agency of Canada. Government of Canada, 19 Oct. 2012. Web. 26 May 2015.
"Leading Causes of Blindness." U.S National Library of Medicine. U.S. National Library of Medicine, 2008. Web. 26 May 2015.
Marc. "Wooster Collective: 3D Optical Illusion Painted On Street To Make Drivers Slow Down." Wooster Collective. Wooster Collective, 12 Sept. 2010. Web. 26 May 2015.
"Moving Eye Illusions." BrainDen.com. Brain Den, 2012. Web. 26 May 2015.
"Retina - Eye Anatomy." Retina - Eye Anatomy. Luke's Cataract & Laser Institute, 2012. Web. 26 May 2015.
"SEE SOME OPTICAL ILLUSIONS - ScienceBob.com." ScienceBobcom. N.p., 26 June 2014. Web. 26 May 2015.
Than, By Ker. "How the Human Eye Works." LiveScience. TechMedia Network, 10 Feb. 2010. Web. 26 May 2015.
"Types of Colour Blindness." Colour Blind Awareness. N.p., n.d. Web. 26 May 2015.
"What Is an Optical Illusion?" What Is an Optical Illusion? N.p., 2014. Web. 26 May 2015.
Human Eye and The Environment
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