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Date:
Directions: ANSWER USING COMPLETE SENTENCES! Use the information you have been given to answer questions about: Disorders of the sense organs: Nearsighted and Farsighted vision.
*To improve your MATH SKILLS spend at least 20 minutes practicing them using IXL.COM. (REMEMBER TO ENTER YOUR USER NAME AND PASSWORD WHEN LOGGING ON! THAT WILL BE PROOF THAT YOU DID IT!)
Level#1
Most eye problems occur when the lens does not focus the "picture" exactly on the retina. A nearsighted person can see close objects clearly. Objects that are far away look fuzzy and blurred. Because the eyeballs are too long, a picture is focused in front of the retina, instead of on the retina. To a farsighted person, close objects look fuzzy, and faraway objects look clear and crisp. The eyeballs of the farsighted person are too short. A picture is focused behind the retina, instead of on the retina.
1. What causes objects that are far away to look fuzzy or blurred to a nearsighted person?
2. What do close objects look like to a farsighted person, and what do faraway objects look like?
3. Why do objects that are close look fuzzy or blurred to a farsighted person?
Level#2
Most eye problems occur when the lens does not focus the "picture" exactly on the retina. A nearsighted person can see close objects clearly. Objects that are far away look fuzzy and blurred. Because the eyeballs are too long, a picture is focused in front of the retina, instead of on the retina. To a farsighted person, close objects look fuzzy, and faraway objects look clear and crisp. The eyeballs of the farsighted person are too short. A picture is focused behind the retina, instead of on the retina. Eyeglasses can correct both these problems by adding an extra lens to each eye.
Date:
Directions: ANSWER USING COMPLETE SENTENCES! Use the information you have been given to answer questions about: Disorders of the sense organs: Nearsighted and Farsighted vision.
*To improve your MATH SKILLS spend at least 20 minutes practicing them using IXL.COM. (REMEMBER TO ENTER YOUR USER NAME AND PASSWORD WHEN LOGGING ON! THAT WILL BE PROOF THAT YOU DID IT!)
Level#1
Most eye problems occur when the lens does not focus the "picture" exactly on the retina. A nearsighted person can see close objects clearly. Objects that are far away look fuzzy and blurred. Because the eyeballs are too long, a picture is focused in front of the retina, instead of on the retina. To a farsighted person, close objects look fuzzy, and faraway objects look clear and crisp. The eyeballs of the farsighted person are too short. A picture is focused behind the retina, instead of on the retina.
1. What causes objects that are far away to look fuzzy or blurred to a nearsighted person?
2. What do close objects look like to a farsighted person, and what do faraway objects look like?
3. Why do objects that are close look fuzzy or blurred to a farsighted person?
Level#2
Most eye problems occur when the lens does not focus the "picture" exactly on the retina. A nearsighted person can see close objects clearly. Objects that are far away look fuzzy and blurred. Because the eyeballs are too long, a picture is focused in front of the retina, instead of on the retina. To a farsighted person, close objects look fuzzy, and faraway objects look clear and crisp. The eyeballs of the farsighted person are too short. A picture is focused behind the retina, instead of on the retina. Eyeglasses can correct both these problems by adding an extra lens to each eye.
1. Why do objects that are close up look fuzzy to a farsighted person?
2. What does having eyeballs that are too short cause?
3. What can eyeglasses do for people who are either near or farsighted ?
Level#3
Most eye problems occur when the lens does not focus the "picture" exactly on the retina. A nearsighted person can see close objects clearly. Objects that are far away look fuzzy and blurred. Because the eyeballs are too long, a picture is focused in front of the retina, instead of on the retina. To a farsighted person, close objects look fuzzy, and faraway objects look clear and crisp. The eyeballs of the farsighted person are too short. A picture is focused behind the retina, instead of on the retina. Eyeglasses can correct both these problems by adding an extra lens to each eye. The extra lens move a picture backward or forward so that it is focused exactly on the retina. Contact lenses are small lenses that are worn on the cornea. Contact lenses provide the wearer with better overall vision than eyeglasses do.
1. Explain how eyeglasses are able to correct a person's vision if they are either near or farsighted.
2. Explain what the extra lenses that eyeglasses provide do to correct a person's vision.
2. Explain what the extra lenses that eyeglasses provide do to correct a person's vision.
3. Explain what contact lenses are, and why they are considered to be a better option over eyeglasses.
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