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Related Experiment Videos

Spaeth/Richman Contrast Sensitivity in Staging Glaucoma.

Aparna Rao1, Anindita Pal1, Shreya Mohapatra1

  • 1Glaucoma Services, LV Prasad Eye Institute, Mithu Tulsi Chanrai Campus, Patia, Bhubaneswar, India.

Translational Vision Science & Technology
|January 1, 2021
PubMed
Summary

The Spaeth/Richman contrast sensitivity (SPARCS) test effectively measures visual function in severe glaucoma. SPARCS scores help stage glaucoma severity and predict disease progression, outperforming the Pelli-Robson chart.

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Area of Science:

  • Ophthalmology
  • Visual Neuroscience

Background:

  • Glaucoma is a progressive optic neuropathy characterized by visual field loss.
  • Accurate assessment of visual function is crucial for managing glaucoma severity and progression.

Purpose of the Study:

  • To evaluate contrast sensitivity measures in glaucoma patients with moderate to severe disease.
  • To compare the efficacy of the Spaeth/Richman contrast sensitivity (SPARCS) test and the Pelli-Robson (PR) chart in assessing visual function.

Main Methods:

  • The study included 50 eyes of 47 patients with moderate to severe glaucoma.
  • Contrast sensitivity was assessed using SPARCS and PR tests in three groups based on mean deviation (MD) thresholds.
  • Multivariate regression analysis correlated visual field MD with SPARCS/PR scores and clinical variables.
Keywords:
NEI-VFQ-25SPARCScontrast sensitivityquality of lifesevere glaucoma

Related Experiment Videos

Main Results:

  • SPARCS total and quadrant-wise scores differed significantly across glaucoma severity groups.
  • Total SPARCS scores strongly predicted changes in MD (R² = 61.8%).
  • SPARCS scores <45 and <38 accurately predicted MD worse than -20 dB and -30 dB, respectively, with high sensitivity and specificity.

Conclusions:

  • The total SPARCS score is a valuable tool for staging glaucoma severity and assessing visual function in advanced glaucoma.
  • SPARCS demonstrates utility in evaluating visual function beyond -20 dB or -30 dB mean deviation in glaucoma.