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Most Common Ocular Conditions

Nystagmus and amblyopia. Most Common Ocular Conditions. Nystagmus . Involuntary jerking motion of the eyes. Y ou tube videos. Types of Nystagmus. Sensory nystagmus is related to vision loss motor nystagmus is related to the control of muscle function. Early Onset Nystagmus (Sensory).

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Most Common Ocular Conditions

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  1. Nystagmus and amblyopia Most Common Ocular Conditions

  2. Nystagmus • Involuntary jerking motion of the eyes.

  3. Youtubevideos

  4. Types of Nystagmus • Sensory nystagmus is related to vision loss • motor nystagmus is related to the control of muscle function.

  5. Early Onset Nystagmus (Sensory) • Often accompanies vision loss acquired at birth or soon after • may be one of the first signs that a child has a loss of vision • usually observed around the sixth to eighth week of life and is rarely seen before then

  6. Inherited Conditions • Most cases of early onset nystagmus are associated with ocular disease many of which are inherited conditions.

  7. Acquired Nystagmus • Nystagmus can be acquired later in life due to neurological dysfunction such as a head injury, multiple sclerosis or brain tumors. Unlike nystagmus acquired from early in life, patients with late onset nystagmus usually notice movement in their vision related to the movement of their eyes.

  8. Directional Nystagmus • The eye will move slowly in one direction, then quickly move back.  • The nystagmus may change as the patient looks in different directions.

  9. Pendular Nystagmus • Typical nystagmus related to vision loss during childhood is a pendular nystagmus. • The eyes rotate back and forth evenly, much like a pendulum.

  10. Horizontal or Pendular Nystagmus Child with Nystagmus Baby with Nystagmus

  11. Vertical Nystagmus Vertical Nystagmus

  12. Rotary Nystagmus Rotary Nystagmus

  13. Affect of Nystagmus on Vision • Patients with early onset nystagmus do not notice the movement of their vision when their eyes shake.

  14. Reference MATERIAL TAKEN FROM: Understanding Nystagmus Richard L. Windsor, O.D., F.A.A.O. Laura K. Windsor, O.D., F.A.A.O.
Published in Vision Enhancement Journal AVAILABLE AT: http://www.lowvision.org/nystagmus.htm

  15. Amblyopia

  16. What amblyopia is…… • Amblyopia is the medical term used when the vision in one of the eyes is reduced because the eye and the brain are not working together properly. • Normally affects only one eye, but may also be present in either one or both eyes.

  17. Prevalence • Amblyopia is the most common cause of visual impairment in childhood. The condition affects approximately 2 to 3 out of every 100 children. • Occurs in approximately 1-5% of the population. • Normally affects only one eye, but may also be present in either one or both eyes.

  18. Causes … • Amblyopia may be caused by any condition that affects normal visual development or use of the eyes. • Strabismus – imbalance of the eyes.

  19. Types of Strabismus… • Esotropia (turning in toward the nose)

  20. Prognosis… • Unless it is successfully treated in early childhood, amblyopia usually persists into adulthood, and is the most common cause of monocular (one eye) visual impairment among children and young and middle-aged adults.

  21. Types of Strabismus: Exotropia • Turning outward toward the temple.

  22. Treatment … • Treating amblyopia involves making the child use the eye with the reduced vision (weaker eye). Currently, there are two ways used to do this: • Atropine • Patching

  23. Success is based on … • The age at which the condition is identified and intervention is begun. • The younger, the better.

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