publication . Article . 2007

Accuracy of cornea and lens biometry using anterior segment optical coherence tomography

Mark C. M. Dunne; Leon N. Davies; James S. Wolffsohn;
Open Access English
  • Published: 18 Dec 2007
  • Country: United Kingdom
Abstract
We assess the accuracy of the Visante anterior segment optical coherence tomographer (AS-OCT) and present improved formulas for measurement of surface curvature and axial separation. Measurements are made in physical model eyes. Accuracy is compared for measurements of corneal thickness (d1) and anterior chamber depth (d2) using-built-in AS-OCT software versus the improved scheme. The improved scheme enables measurements of lens thickness (d 3) and surface curvature, in the form of conic sections specified by vertex radii and conic constants. These parameters are converted to surface coordinates for error analysis. The built-in AS-OCT software typically overesti...
Subjects
free text keywords: Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Biomaterials, Biomedical Engineering, Optical coherence tomography, medicine.diagnostic_test, medicine, Curvature, Cataract surgery, medicine.medical_treatment, business.industry, business, Instrumentation, Optics, Cornea, medicine.anatomical_structure, Conic section, Lens (optics), law.invention, law, Radius
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