Quantitative single and multi-surface clinical corneal topography utilizing optical coherence tomography.

Journal Article (Journal Article)

Successful surgical treatment of ocular astigmatism requires accurate characterization of both magnitude and axis of the astigmatism. Keratometry and topography are clinically widely used for this measurement; however, their analysis is limited to the anterior corneal surface. Unlike these techniques, optical coherence tomography (OCT) offers the advantage of measuring both the anterior and posterior corneal surface contributions. We present a technique to combine the local curvatures of both surfaces into a single pseudosurface suitable for clinical application. Building on prior work in distributed scanning OCT (DSOCT) to remove corrupting patient motion artifacts, we present the results of a pilot patient study where extracted values of clinical corneal astigmatic power magnitude and direction from DSOCT corneal volumes were comparable to standard clinical measures of corneal astigmatism.

Full Text

Duke Authors

Cited Authors

  • McNabb, RP; Kuo, AN; Izatt, JA

Published Date

  • April 15, 2013

Published In

Volume / Issue

  • 38 / 8

Start / End Page

  • 1212 - 1214

PubMed ID

  • 23595434

Pubmed Central ID

  • PMC4517424

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

Digital Object Identifier (DOI)

  • 10.1364/OL.38.001212


  • eng

Conference Location

  • United States