SD-OCT with prolonged scan depth for imaging the anterior segment of the eye.

Meixiao Shen, Michael Renxun Wang, Yimin Yuan, Feng Chen, Carol Karp, Sonia H Yoo, Jianhua Wang

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

An 840-nm wavelength spectral domain optical coherence tomography (SD-OCT) with prolonged scan depth was developed and mounted onto a conventional slit lamp for imaging the anterior segment of the eye. X-Y cross aiming was applied to align the SD-OCT scanning position during imaging. An internal fixation target displayed on a miniature LCD monitor was provided. The SD-OCT instrument had an axial resolution of 6 μm and a prolonged scan depth of 7.2 mm. High-quality SD-OCT images, consisting of 2,048 × 2,048 pixels, were acquired of the entire anterior chamber and entire crystalline lens from a healthy subject. The entire cornea, anterior chamber angle, limbus, and iris were clearly visible. Additionally, the internal structure of crystalline lens, including anterior and posterior surfaces of the crystalline lens, capsule, nucleus, and cortex, were clearly imaged with the instrument. The system was also tested in imaging accommodation of the same eye, demonstrating the feasibility of the novel approach for evaluating presbyopia/accommodation.

Original languageEnglish
JournalOphthalmic surgery, lasers & imaging : the official journal of the International Society for Imaging in the Eye
Volume41 Suppl
StatePublished - Nov 1 2010
Externally publishedYes

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Anterior Eye Segment
Optical Coherence Tomography
Crystalline Lens
Crystalline Lens Cortex
Anterior Chamber
Crystalline Lens Nucleus
Crystalline Lens Capsule
Presbyopia
Iris
Cornea
Healthy Volunteers

ASJC Scopus subject areas

  • Medicine(all)

Cite this

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abstract = "An 840-nm wavelength spectral domain optical coherence tomography (SD-OCT) with prolonged scan depth was developed and mounted onto a conventional slit lamp for imaging the anterior segment of the eye. X-Y cross aiming was applied to align the SD-OCT scanning position during imaging. An internal fixation target displayed on a miniature LCD monitor was provided. The SD-OCT instrument had an axial resolution of 6 μm and a prolonged scan depth of 7.2 mm. High-quality SD-OCT images, consisting of 2,048 × 2,048 pixels, were acquired of the entire anterior chamber and entire crystalline lens from a healthy subject. The entire cornea, anterior chamber angle, limbus, and iris were clearly visible. Additionally, the internal structure of crystalline lens, including anterior and posterior surfaces of the crystalline lens, capsule, nucleus, and cortex, were clearly imaged with the instrument. The system was also tested in imaging accommodation of the same eye, demonstrating the feasibility of the novel approach for evaluating presbyopia/accommodation.",
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AU - Shen, Meixiao

AU - Wang, Michael Renxun

AU - Yuan, Yimin

AU - Chen, Feng

AU - Karp, Carol

AU - Yoo, Sonia H

AU - Wang, Jianhua

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