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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Related Experiment Video

Updated: Dec 26, 2025

Author Spotlight: Ex Vivo OCT-Based Multimodal Imaging of Human Donor Eyes for Research into Age-Related Macular Degeneration
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Longitudinal Macular Structure-Function Relationships in Glaucoma.

Vahid Mohammadzadeh1, Alessandro Rabiolo2, Qiang Fu3

  • 1Glaucoma Division, Stein Eye Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California.

Ophthalmology
|March 17, 2020
PubMed
Summary
This summary is machine-generated.

Glaucoma progression is better detected using both structural and functional measurements. Structural changes in the macula were found more often than visual field changes over time.

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Glaucoma is a progressive optic neuropathy characterized by retinal ganglion cell (RGC) loss.
  • Central visual field (VF) defects and macular thinning are key indicators of glaucoma progression.
  • Longitudinal monitoring of structure-function relationships is crucial for timely intervention.

Purpose of the Study:

  • To investigate the relationship between longitudinal changes in macular thickness measured by Optical Coherence Tomography (OCT) and central visual field (VF) changes in glaucoma patients.
  • To assess the correlation between rates of change in macular structure and VF sensitivity.
  • To determine if structural or functional changes are detected more frequently over time.

Main Methods:

  • A longitudinal cohort study included 116 eyes with at least 3 years of follow-up and a minimum of 5 macular OCT scans and central 10° VF tests.
  • OCT superpixels and VF locations were matched, correcting for RGC displacement.
  • Rates of change for macular thickness (full macular thickness, ganglion cell complex, ganglion cell inner plexiform layer, ganglion cell layer) and VF total deviation were estimated and correlated.

Main Results:

  • The median follow-up was 4.2 years with a median of 8 exams.
  • Weak to fair correlations (r values ranging from 0.24 to 0.41) were observed between structural and functional rates of change, particularly at 3.4° and 5.6° eccentricities.
  • Significant structural worsening was detected more frequently than functional deterioration at 3- and 5-year time points.

Conclusions:

  • Correlations between central structural and functional changes in glaucoma are generally weak to fair.
  • Macular structural changes are detected more frequently than corresponding visual field deficits.
  • Combining OCT and VF measurements is essential for optimal detection of central glaucoma progression.