The Eye

Another good video from MyGCSEScience.com:

my-gcsescience.com The Eye

Contains information about the function of the parts of the eye, long and short sightedness, and comparing the eye and the camera.

Specification reference P3.1.4 The eye:

• Know the function of the following parts of the eye: retina, lens, cornea, pupil / iris, ciliary muscle, suspensory ligaments.
• understand how the action of the ciliary muscle causes changes in the shape of the lens, which allows the light to be focused at varying distances.
• Be able to explain the cause of long and short sightedness and describe correction of vision using convex and concave lenses to produce an image on the retina.
• Know the range of vision for the eye is between the near point is
  (approximately 25 cm) and the far point (infinity).
• Be able to compare the function and structure of the eye and the camera (including be aware that the film in a camera or the CCDs in a digital camera is the equivalent of the retina in the eye.
• That lasers can be used surgically correct eye problems (Knowledge of how lasers work is not required)