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Related Experiment Video

Updated: Mar 15, 2026

Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Central Field Index Versus Visual Field Index for Central Visual Function in Stable Glaucoma.

Aparna Rao1, Debananda Padhy, Harika Mudunuri

  • 1Glaucoma Services, LV Prasad Eye Institute, Bhubaneswar, India.

Journal of Glaucoma
|September 17, 2016
PubMed
Summary
This summary is machine-generated.

Central Field Index (CFI) shows less variability than Visual Field Index (VFI) in stable glaucoma patients with central vision loss. This suggests CFI is more reliable for monitoring advanced glaucoma, especially with central defects.

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Area of Science:

  • Ophthalmology
  • Glaucoma research
  • Visual field testing

Background:

  • Glaucoma is a leading cause of irreversible blindness.
  • Accurate monitoring of glaucoma progression is crucial for preserving vision.
  • Central visual field defects can impact daily activities.

Purpose of the Study:

  • To compare the variability of Central Field Index (CFI) and Visual Field Index (VFI) in stable glaucoma patients.
  • To assess the reliability of CFI versus VFI in eyes with central fixation involvement.
  • To determine if CFI is a more stable metric for monitoring glaucoma progression in specific patient groups.

Main Methods:

  • Retrospective analysis of Humphrey Visual Fields (24-2 and 10-2 programs).
  • Inclusion of patients with stable glaucoma and repeatable central fixation involvement.
  • Calculation and comparison of CFI and VFI variability across different glaucoma severity levels (early, moderate, severe).

Main Results:

  • Central Field Index (CFI) demonstrated significantly less intervisit variability than Visual Field Index (VFI), particularly in severe glaucoma.
  • The range of CFI variability was narrower than VFI across all glaucoma severities.
  • Divergence between CFI and VFI began at a Mean Deviation worse than -10 dB and correlated with points of significant visual field loss.

Conclusions:

  • Central Field Index (CFI) is less variable than Visual Field Index (VFI) in stable glaucoma eyes with central fixation involvement.
  • CFI appears to be a more reliable index for monitoring disease progression in advanced glaucoma with central defects.
  • Incorporating CFI calculation may enhance the monitoring of glaucoma patients with central visual field loss.