COMMON PROBLEMS OF THE EYE

Question 1

what parts of the eye are made of muscle ?

Answer 1

cillary muscles , iris

Question 2

what does the retina contain

Answer 2

photoreceptor cells

Question 3

what is accommodation

Answer 3

ability to change the refraction power of the lens to keep objects in focus as they move closer

Question 4

what happens to the lens and suspensory ligaments when looking at an object far away ?

Answer 4

lens - becomes long and thin
suspensory ligaments - taught (tight)

Question 5

what happens to incoming light rays and light rays within the eye when looking at an object far away

Answer 5

incoming light rays - diverging less
light rays within the eye - refracted less

Question 6

what happens to the lens,suspensory ligaments and cillairy muscles when looking at an object close to the eye

Answer 6

lens - short and fat
suspensory ligaments - slack ( loose)
cillary muscles - contracted

Question 7

what happens to light rays when looking at an object up close

Answer 7

incoming light rays - diverging more
light rays withing the eye - refracted more
BOTH MORE - REMEMBER

Question 8

what is the word for short sightedness

Answer 8

myopia

Question 9

what is the name for long sightedness

Answer 9

hyperopia

Question 10

what happens in short sightedness

Answer 10

image formed in front of retina
light rays bent to much

Question 11

what happens in long sightedness

Answer 11

image formed behind retina
light not bent enough