Problems with the eye Flashcards
1
Q
hyperopia
A
long sightedness
cant refract light enough
unable to focus on nearby objects
light isnt focused when it hits the retina
image appears behind retina
- object appears behind retina
2
Q
fixing hyperopia
A
glasses with CONVEX lens
provide extra refracting power
eye is able to focus light properly on retina
3
Q
myopia
A
lens refracts light too much
light from distant objects is over refracted
focuses and forms an image before it hits the retina
light rays dont focus properly on retina
object appears blurry
4
Q
fixing myopia
A
glasses with CONCAVE LENS
refract light outward
counteract OVER REFRACTION
allows light to focus on retina