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Related Experiment Videos

Visual function in Vogt-Koyanagi-Harada patients.

Soon-Phaik Chee1, Chi D Luu, Ching-Li Cheng

  • 1Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, Singapore. sneccsp@pacific.net.sg

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|March 12, 2005
PubMed
Summary

Vogt-Koyanagi-Harada (VKH) disease can cause significant visual dysfunction, even after inflammation resolves. Multifocal electroretinograms (mfERGs) can detect subclinical retinal damage in VKH patients, aiding in early management.

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Area of Science:

  • Ophthalmology
  • Uveitis
  • Retinal Imaging

Background:

  • Vogt-Koyanagi-Harada (VKH) disease involves inflammation of the uvea, choroid, and retina.
  • Patients often report visual disturbances post-inflammation despite good visual acuity.

Purpose of the Study:

  • To investigate visual function deficits in convalescent Vogt-Koyanagi-Harada (VKH) patients.
  • To assess the utility of multifocal electroretinograms (mfERGs) in detecting retinal dysfunction.

Main Methods:

  • Cross-sectional observational study comparing convalescent VKH patients and normal subjects.
  • Evaluated best-corrected visual acuity (BCVA) and mfERGs.
  • Analyzed mfERG data based on peripapillary atrophy (PPA) size.

Main Results:

Related Experiment Videos

  • VKH eyes with large peripapillary atrophy (PPA/D ratio >2) showed significantly reduced mfERG amplitude and delayed implicit time.
  • VKH eyes with smaller PPA (PPA/D ratio <1) also exhibited reduced mfERG amplitudes and delayed implicit times, particularly in the peripapillary region.
  • Subclinical retinal dysfunction was detected even in VKH patients without visible PPA.

Conclusions:

  • Large PPA in VKH patients correlates with clinically significant visual dysfunction.
  • Subclinical retinal dysfunction is present in VKH patients, even without PPA.
  • mfERGs are valuable for detecting early retinal damage in VKH management.