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Preferential Hyperacuity Perimetry to detect hydroxychloroquine retinal toxicity.

Carolyn Anderson1, Patricia Pahk, Gregory R Blaha

  • 1Department of Ophthalmology, Lahey Clinic, Peabody, Massachusetts 01960, USA. carolyn.anderson@lahey.org

Retina (Philadelphia, Pa.)
|June 4, 2009
PubMed
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Preferential Hyperacuity Perimetry (PHP) effectively detected retinal toxicity from hydroxychloroquine (HCQ) and chloroquine. Patients with confirmed or suspected toxicity showed defects, while those without toxicity did not.

Area of Science:

  • Ophthalmology
  • Pharmacology

Background:

  • Hydroxychloroquine (HCQ) and chloroquine are medications with potential for retinal toxicity.
  • Early detection of HCQ/chloroquine retinopathy is crucial for preserving vision.

Purpose of the Study:

  • To evaluate the efficacy of Preferential Hyperacuity Perimetry (PHP) in identifying retinal toxicity caused by HCQ or chloroquine.

Main Methods:

  • Fifteen patients were categorized into three groups: confirmed toxicity, suspected toxicity, and long-term users without toxicity.
  • All participants underwent PHP testing to assess visual function.

Main Results:

  • Significant hyperacuity defects were observed in patients with known or suspected HCQ/chloroquine toxicity via PHP.
  • No PHP hyperacuity defects were found in patients on long-term HCQ therapy without clinical signs of toxicity.

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Conclusions:

  • PHP shows promise as a supplementary tool for detecting HCQ/chloroquine-induced retinal toxicity.
  • Further research is recommended to validate PHP's role in managing patients at risk for drug-induced retinopathy.