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Related Experiment Video

Updated: Aug 15, 2025

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Personal Computer-Based Visual Field Testing as an Alternative to Standard Automated Perimetry.

Muhammad A Khizer1,2, Taimoor A Khan1,2, Umar Ijaz1,2

  • 1Ophthalmology, National University of Medical Sciences, Rawalpindi, PAK.

Cureus
|January 5, 2023
PubMed
Summary
This summary is machine-generated.

Specvis, a computer-based software, shows promising results for diagnosing and monitoring visual field defects, offering a cost-effective alternative to standard automated perimetry. This study compared Specvis to the Humphrey Field Analyzer (HFA) in Pakistan.

Keywords:
glaucoma diagnosis and managementglaucoma practiceneuro-visual rehabilitationopen angle glaucomaprimary open angle glaucomavisual field analysisvisual field defectvisual field loss

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Area of Science:

  • Ophthalmology
  • Medical Technology
  • Neuro-ophthalmology

Background:

  • Standard automated perimetry (SAP) is the gold standard for visual field assessment in neuro-ophthalmic conditions.
  • Glaucoma, a progressive optic neuropathy, involves ganglion cell damage and visual field defects.
  • Remote screening for visual field defects is advancing with computer/tablet-based software.

Purpose of the Study:

  • To compare Specvis and Humphrey Field Analyzer (HFA) visual field reports graphically.
  • To assess the ease of use of Specvis compared to HFA.
  • To compare the test duration between Specvis and HFA.

Main Methods:

  • A cross-sectional validation study was conducted at a tertiary ophthalmology institute.
  • 109 subjects (218 eyes) were divided into healthy and diseased groups.
  • Specvis and HFA (VF 30-2 program) visual fields were compared graphically by three senior ophthalmologists using a 5-point Likert scale.

Main Results:

  • A male preponderance (58.72%) was observed. Advanced glaucoma was the most common disease (10.09%).
  • HFA test duration averaged 213.33 seconds (SD=33.49), while Specvis averaged 267.36 seconds (SD=35.98).
  • Significant positive correlation found between ophthalmologists' scores; significant negative correlation between ease of use and age for both HFA and Specvis.

Conclusions:

  • Specvis demonstrates promising results for diagnosing and monitoring visual field defects.
  • It serves as a cost-effective and accessible tool bridging basic visual field testing and SAP.
  • Further validation and application of Specvis in clinical practice are warranted.