Spectral domain optical coherence tomography can detect visible and subthreshold laser burns using 532-nm laser

Ajay Bhatnagar, Jonathan M Gibson, Samer Elsherbiny

Research output: Contribution to journalArticle

Abstract

Retinal burns of subthreshold intensity created using micropulsed diode laser, which remain clinically invisible, have been shown to be successful in treating macular edema while minimizing the risk of collateral damage to the retina. A study was conducted to determine whether spectral domain optical coherence tomography (SD-OCT) could be used to detect subthreshold retinal burns created using the 532-nm green wavelength laser. A series of retinal burns of gradually decreasing intensity were created in 10 eyes. Retinal burns produced with duration of laser exposure of 0.03 second or less, although clinically invisible, were detectable on the SD-OCT scan as increased retinal reflectivity confined to the outer retinal layers. This series demonstrates the potential of using SD-OCT imaging to verify delivery of subthreshold laser burns.
Original languageEnglish
Pages (from-to)e1-e3
Number of pages3
JournalOphthalmic Surgery, Lasers and Imaging
Volume41
DOIs
Publication statusPublished - 2010
EventAssociation for Research in Vision and Ophthalmology annual meeting - Fort Lauderdale, FL, United States
Duration: 3 May 20097 May 2009

Bibliographical note

Presented as a poster at the Association for Research in Vision and Ophthalmology annual meeting, May 3–7, 2009, Fort Lauderdale, Florida.

Keywords

  • diabetic retinopathy
  • humans
  • laser therapy
  • light coagulation
  • macular edema
  • retina
  • optical coherence tomography

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