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Related Experiment Videos

Plotting visual fields using contralateral fixation: a novel honeycomb device.

Yehoshua Almog1, Avner Shiftan

  • 1Neuro-Ophthalmology Unit, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel. Almogy@clalit.org.il

Archives of Ophthalmology (Chicago, Ill. : 1960)
|July 14, 2004
PubMed
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This study introduces a novel eye shield device that stabilizes fixation for visual field testing in patients with central vision loss. The device enables accurate plotting of visual field defects, improving diagnostic capabilities.

Area of Science:

  • Ophthalmology
  • Visual Science
  • Medical Devices

Background:

  • Accurate visual field testing is crucial for diagnosing and monitoring eye conditions.
  • Patients with large central visual field defects often struggle with fixation, complicating perimetry.
  • Existing methods may yield unreliable results for individuals with significant central vision loss.

Purpose of the Study:

  • To present a new device designed to maintain steady fixation during visual field plotting.
  • To evaluate the efficacy of this device in patients with unilateral central vision loss.

Main Methods:

  • A novel eye shield with multiple adjacent pinhole tubes was developed.
  • The device was tested on healthy volunteers with simulated defects and over 100 patients with central vision loss.

Related Experiment Videos

  • The device constricts the visual field of the fixating eye to the central 3 degrees.

    • Main Results:

    • The device successfully maintained steady fixation in patients with central visual field defects.
    • Clear-cut visual field defects were plotted accurately using the device.
    • Meaningful results were unobtainable without the device in affected patients.
    • The device proved efficient and simple to use across various perimetry types.

    Conclusions:

    • This innovative eye shield device is effective for visual field plotting in patients with central vision loss.
    • It offers a simple, efficient, and versatile solution for improving perimetry accuracy.
    • The device facilitates reliable diagnosis and monitoring of visual field impairments.