Corneal Pachymetry Mapping with High-speed Optical Coherence Tomography

Yan Li, Raj Shekhar, David Huang

Research output: Contribution to journalArticle

171 Citations (Scopus)

Abstract

Objective: To map corneal thickness before and after LASIK with optical coherence tomography (OCT). Design: Cross-sectional observational study. Participants: Forty-two eyes of 21 normal subjects undergoing LASIK. Methods: A high-speed (2000 axial scans/second) 1.3-μm-wavelength corneal and anterior segment OCT prototype was used for corneal scanning. The scan pattern consisted of 10-mm radial lines on 8 meridians centered on the vertex reflection. The entire scan pattern of 1024 a-scans was acquired in 0.5 seconds. We developed automated computer processing for 3-dimensional corneal reconstruction and measurement. Corneal thickness was measured normal to the anterior surface and presented as color pachymetry maps and zonal statistics. The maps were divided into a central zone (

Original languageEnglish (US)
JournalOphthalmology
Volume113
Issue number5
DOIs
StatePublished - May 2006

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Corneal Pachymetry
Laser In Situ Keratomileusis
Optical Coherence Tomography
Meridians
Observational Studies
Color
Cross-Sectional Studies

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Corneal Pachymetry Mapping with High-speed Optical Coherence Tomography. / Li, Yan; Shekhar, Raj; Huang, David.

In: Ophthalmology, Vol. 113, No. 5, 05.2006.

Research output: Contribution to journalArticle

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