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Three-dimensional biomicroscopy enhances toric phakic IOL placement
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 Pierre-Marie Josselin |
BOSTON — Three-dimensional high-frequency biomicroscopy showed promise as a new method to gauge posterior chamber toric phakic IOL stability, a speaker said here.
"Anterior segment measurement constitutes a cycle, which is why we need to use a three-dimensional sulcus shape to size a phakic IOL," Pierre-Marie Josselin, MD, said at the American Society of Cataract and Refractive Surgery meeting. "This product could aid an understanding of crystalline lens design in anticipating the final IOL position."
Three-dimensional imaging is necessary to assess sulcus-to-sulcus shape. Imaging identifies the cornea, iris, ciliary body and IOL.
A study included 48 eyes of 25 patients with a mean age of 29 years. Results showed low correlation between angle-to-angle and sulcus-to-sulcus measurements. At 3 months postop, mean rotation was 5.5°; rotation was mostly toward the vertical axis. One patient required lens exchange because of lens rotation.
"Knowing the [sulcus-to-sulcus measurement] first, it could be possible to see the best IOL position and to choose the best rotation of toricity," Dr. Josselin said.
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