The eye

• The eye is a sense organ containing receptors sensitive to light intensity and colour.
• just label it

  A) suspensory ligaments

  B) cornea

  C) iris

  D) pupil

  E) clilary muscle

  F) lens

  G) sclera

  H) retina

  I) fovea

  J) optic nerve

  
• fill in gapalapas

  A) sclera

  B) lens

  C) refracts light

  D) light enters the pupil

  E) refracts

  F) retina

  G) light receptors

  H) impulses

  I) eye

  J) brain

  
• The amount of light entering the eye is controlled by a reflex action
• fill guaparo

  A) radial

  B) iris

  C) contracted

  D) circular

  E) iris

  F) dilated

  
• To focus on a near object – the lens becomes thicker, this allows the light rays to refract (bend) more strongly.
• To focus on a distant object – the lens is pulled thin, this allows the light rays to refract slightly.
• fillet

  A) ciliary

  B) ligaments

  C) muscle

  D) lens

  E) contract

  F) relax

  G) loosen

  H) tighten

  I) low

  J) high

  K) thicker

  L) thin

  M) strongly

  N) slightly

  
• What is accomodation?

  Accommodation is the process of changing the shape of the lens to focus on near or distant objects.
• Two common defects of the eyes are myopia (short sightedness) and hyperopia (long sightedness) in which rays of light do not focus on the retina..
• How are eye defects treated?

  with spectacle lenses which refract light rays to reach the retina
• FILL FILL FILL

  A) myopia

  B) concave

  
• gappy

  A) convex

  B) hyperopia