Abstract

We address the measurement and correction of fan distortion in optical coherence tomography (OCT). This effect arises from the scanning system configuration and prevents one, in general, from obtaining quantitative topographic data from OCT. Computer simulations allowed us to quantify the effect and evaluate its dependence on the scanning mirror separation and design of the collimating lens, as well as to estimate the optimal axial position of that lens to minimize the fan distortion. We also developed a numerical algorithm based on 3-D ray propagation for the correction of the residual fan distortion. The effect was studied experimentally using a custom developed time-domain OCT in a Michelson configuration provided with a confocal channel, and the accuracy of the fan distortion correction algorithm tested on samples of known dimensions (flat surfaces and spherical lenses). With a proper calibration of the system with use of an onfocal channel, this algorithm makes it possible for time-domain OCT devices to be used as topographers.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Corneal topography from spectral optical coherence tomography (sOCT)

Sergio Ortiz, Damian Siedlecki, Pablo Pérez-Merino, Noelia Chia, Alberto de Castro, Maciej Szkulmowski, Maciej Wojtkowski, and Susana Marcos
Biomed. Opt. Express 2(12) 3232-3247 (2011)

Optical distortion correction in Optical Coherence Tomography for quantitative ocular anterior segment by three-dimensional imaging

Sergio Ortiz, Damian Siedlecki, Ireneusz Grulkowski, Laura Remon, Daniel Pascual, Maciej Wojtkowski, and Susana Marcos
Opt. Express 18(3) 2782-2796 (2010)

Validation of a combined corneal topographer and aberrometer based on Shack–Hartmann wave-front sensing

Fan Zhou, Xin Hong, Donald T. Miller, Larry N. Thibos, and Arthur Bradley
J. Opt. Soc. Am. A 21(5) 683-696 (2004)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription