1. Defects in Human Vision
Josh Cipleu
Parker Dasher

2. Myopia (Nearsightedness)
A condition in which close objects appear clearly, but far ones do not.
Causes:
-Cornea or Lens being too curved for the length of your eyeball.
-Tends to run in the Family
Treatments:
-Glasses
-Contact Lens
-LASIK (Refractive or Laser Surgery)

3. Hypermetropia (Farsightedness)
a condition of the eye in which parallel rays are focused behind the retina and distant objects can be seen more distinctly than near ones
Causes:
Eye is shorter than normal
Cornea is not curved enough
Lens sits farther back in the eye than it should
Low converging power of eye lens
because of weak action of ciliary muscles
Treatment:
Corrective glasses
Contact lenses
Eye surgery such as LASIK is available

4. Presbyopia
Farsightedness caused by loss of elasticity of the lens of the eye, occurring typically in middle and old age.
Causes:
-The gradual thickening and loss of flexibility of the natural lens of your eye
Treatments:
-Glasses
-Contact Lens

6. Astigmatism 3 types of Astigmatism:
A common form of visual impairment in which part of an image is blurred due to an irregularity shape in the cornea
3 types of Astigmatism:
Myopic astigmatism: One or both eyes are nearsighted
Hyperopic astigmatism: One or both eyes are farsighted.
Mixed astigmatism: One eye is nearsighted, and the other is farsighted.

7. Astigmatism Continued...
Causes:
Astigmatism usually is caused by an irregularly shaped cornea. Instead of the cornea having a symmetrically round shape (like a baseball), it is shaped more like a football
Treatments:
Corrective glasses
Contact lenses
Eye surgery such as LASIK is available

9. https://youtu.be/6yxffFmi4Eo

10. 1.)Who is this Powerpoint by? 1.)Who is this Powerpoint by?
a.) Chuck Norris
b.) Tom & Jerry
c.) Parker and Cipleu
d.) I Don’t Know

11. 2.)Myopia is….. 3.) ____ can fix Myopia. a.) Farsightedness a.) Magic
b.) Nearsightedness
c.) Blindness
d.) Perfect Vision
3.) ____ can fix Myopia.
a.) Magic
b.) Potions
c.) Glasses
d.) Squinting

12. Questions: 4. What is Hypermetropia also known as? Nearsightedness
Farsightedness
Cross-eyed
Colorblindness
5. True or False: Hypermetropia is caused when the lens sits further up in the eye than it should
6. Name one treatment of Hypermetropia

13. 7.)Presbyopia is also known as____ 8.)Presbyopia is caused by…..
a.) Nearsightedness
b.)Farsightedness
c.)Blindness
d.)Perfect Vision
8.)Presbyopia is caused by…..
a.)Loss of elasticity
b.)Too much elasticity
c.)Lack of knowledge
d.)Not enough sleep

14. 9.) True or False: Presbyopia tends to affect people at a young age.

15. 10. How many types of Astigmatism are there?_____
11. When one eye is nearsighted, and the other is farsighted this is called:
double sided vision c. Nearsightedness
Mixed astigmatism d. Farsightedness

16. Sources:
What Is Astigmatism? (n.d.). Retrieved February 24, 2017, from health/astigmatism-eyes
Presbyopia. Retrieved February 24, 2017, from
Hyperopia (Farsightedness) causes. (n.d.). Retrieved February 24, 2017, from
Myopia causes. Retrieved February 24, 2017, from