Imaging of Iris Lesions With High-Speed Optical Coherence Tomography.
Bakri, Sophie J. MD; Singh, Arun D. MD; Lowder, Careen Y. MD; Chalita, Maria Regina MD; Li, Yan MS; Izatt, Joseph A. PhD; Rollins, Andrew M. PhD; Huang, David MD, PhD
[Article] Ophthalmic Surgery, Lasers & Imaging. 38(1):27-34, January/February 2007.

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BACKGROUND AND OBJECTIVES: To image and measure iris tumors with optical coherence tomography (OCT).

PATIENTS AND METHODS: High-speed (2,000-4,000 axial-scan/sec and 4-16 frames/sec) 1.3-micron wavelength anterior segment OCT prototypes were used to image 6 eyes of 6 patients with a variety of iris lesions, including focal iris nevus, diffuse iris nevus, amelanotic iris nevus, iris melanocytosis, and iris melanoma. OCT images were compared with slit-lamp photography and ultrasound biomicroscopy.

RESULTS: OCT at 1.3-micron wavelength could penetrate the full thickness of the iris lesions and allow three-dimensional measurement of lesion size. Internal reflectivity is correlated with pigmentation. OCT is a convenient non-contact method that provides imaging of the clinically important angle structures (scleral spur and angle recess).

CONCLUSIONS: OCT is a new imaging modality that complements slit-lamp photography and ultrasound biomicroscopy for serial evaluation of iris lesions.

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