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Most Common Ocular Conditions. Conditions that Often Accompany Other Visual Exceptionalities Cataracts. Cataracts. A cataract is a clouding of the lens Can vary in degree from a very light “shadowing” to total blockage of light. The word “cataract” comes from….

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most common ocular conditions

Most Common Ocular Conditions

Conditions that Often Accompany Other Visual Exceptionalities


  • A cataract is a clouding of the lens
  • Can vary in degree from a very light “shadowing” to total blockage of light.
the word cataract comes from
The word “cataract” comes from…
  • The latin word “cataracta” meaning “waterfall”
  • People with cataracts often say that their visual experience is like looking through a waterfall (either small or large)
signs and symptoms
Signs and symptoms
  • As the cataract grows, the opacity of the lens causes loss of visual acuity
  • The ability to see contrast clearly is also often lost
signs and symptoms cont
Signs and Symptoms (cont)
  • It becomes more difficult to see the differences between colors
  • Light sensitivity becomes much more pronounced
progression of development
Progression of development
  • A cataract may actually cause the eye to be more myopic at the beginning of the process.
  • Eventually, the color of the cataract itself changes to light yellow and may affect the perception of color (especially blue)
  • The progressions of the condition is usually slow and may take years to develop to a point where it is noticed.
  • Both eyes are usually affected, though in exceptional cases (e. g. when there is another visual condition) it can affect just one.
age related cataracts
Age Related cataracts
  • Happens to EVERYONE if they live long enough
  • Begins with a light opacity in the lens
  • Progresses to a swelling of the lens and then
  • The lens shrinks and opacity becomes complete
  • If left untreated, the lens can actually swell to the point that it may become inflamed and even rupture.
  • Eventually the Zonules of Zen can be weakened and the lens capsule can become dislodged
incidence of cataracts
Incidence of Cataracts
  • World Health Organization reports that 48% of world wide blindness is due to cataracts.
  • 18 million people
  • World wide, services are often inadequate and age related cataracts are not treated.
in the united states
In the United States. . .
  • At least some level of cataracting has been reported at
    • 42% of those between 52 and 64;
    • 60% of those between 65 and 74; and
    • 91% of those between the ages of 75 and 85.
it is generally agreed that
It is generally agreed that . . .
  • The increased depletion of the ozone layer has contributed to the occurrence of cataracts.
other types of cataracts
other types of cataracts1
Other types of cataracts
  • Cataracts can also be caused by trauma to the eye inluding:
    • Blunt object trauma often caused by injuries that are work or sports related
treatment of cataracts
Treatment of cataracts
  • The lens is surgically removed, usually leaving the lens capsule in place:
then the old lens is replaced
Then the old lens is replaced . . .
  • A small, plastic artificial intraocular lens