Gonioscopy

Aka: Gonioscopy, Gonioscope, Van Herrick Test

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II. Definitions

  1. Gonioscope
    1. Specialized optical instrument and lens used to examine the anterior chamber angle
  2. Gonioscopy
    1. Ophthalmology exam of the anterior chamber region between the Cornea and the iris
    2. Allows for measurement of the angle, as well as evaluation for blockage of drainage from the region

III. Exam: Van Herrick Test

  1. Temporal (lateral) edge of Cornea-iris margin is viewed at 60 degree angle with Slit Lamp
  2. Using narrow beam of light from Slit Lamp, width of Cornea is compared with width of anterior chamber

IV. Resources

  1. Van Herrick Test
    1. https://www.aao.org/basic-skills/van-herick-technique
  2. Gonioscopy
    1. http://gonioscopy.org/basic-exam-techniques.htm

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