accommodation

• what is accommodation?

  the process of changing the shape of the lens to focus on near or distant objects
• the process of changing the shape of the lens to focus on near or distant objects.

  accommodation
• what happens in the eye when we focus on near objects?

  ciliary muscles contract,

  suspensory ligaments loosen,

  lens is thicker and refracts light rays more strongly.
• what happens when the eyes focus on far objects?

  ciliary muscles relax,

  suspensory ligaments are pulled tight,

  lens is then pulled thin and only slightly refracts light rays.
• Can you explain what happens when someone has a problem seeing objects far away?

  the distance between the lens and retina is too large,

  making the light focus in front of the retina,

  this can be corrected using a divergent lens.