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James Sheedy, Pacific University

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Description

There are 2 types of eyestrain:

Internal symptoms

  • Ache or pain felt inside the eye
  • Caused by convergence and accommodative stress, refractive error
  • Caused by eye conditions

External symptoms (dry eye symptoms)

  • Dryness or irritation on the front of the eye
  • Caused by conditions that compromise the quality of the visual stimulus

What Eye Doctors Know:

  • Accommodative and/or vergence stress cause symptoms (internal)
  • Exophoria is typically more comfortable than esophoria
  • Convergence is much easier than divergence
  • There is considerable variation in phoria and ZSCBV across patients

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Jun 6th, 8:30 AM Jun 6th, 9:00 AM

What eye doctors know about visual discomfort

There are 2 types of eyestrain:

Internal symptoms

  • Ache or pain felt inside the eye
  • Caused by convergence and accommodative stress, refractive error
  • Caused by eye conditions

External symptoms (dry eye symptoms)

  • Dryness or irritation on the front of the eye
  • Caused by conditions that compromise the quality of the visual stimulus

What Eye Doctors Know:

  • Accommodative and/or vergence stress cause symptoms (internal)
  • Exophoria is typically more comfortable than esophoria
  • Convergence is much easier than divergence
  • There is considerable variation in phoria and ZSCBV across patients