Anterior segment imaging: New milestones, new challenges

Dupps, William J.

doi:10.1016/j.jcrs.2006.08.024

Cited by 13 publications

(9 citation statements)

References 10 publications

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“…13,14,23 However, the corneal curvature can influence light reflections and the optical CT. An important source of error is the impact of the optical first surface in the measurement of deeper surfaces. 27 Light bending at the anterior corneal surface could induce optical distortions in paracentral CT measurements (Fig. 3).…”

Section: Discussionmentioning

confidence: 99%

Influence of Corneal Curvature on Central and Paracentral Pachymetry With Optical Coherence Tomography

Wirbelauer

Thannhäuser

Pham

2009

Cornea

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Section: Discussionmentioning

confidence: 99%

Influence of Corneal Curvature on Central and Paracentral Pachymetry With Optical Coherence Tomography

Wirbelauer

Thannhäuser

Pham

2009

Cornea

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“…These include slit scanning topography, Scheimpflug imaging, ultrasound biomicroscopy [22][23][24][25][26]. OCT imaging of anterior segment of eye has earned considerable attention since the first demonstration in 1994 [27], and most of the available commercial devices dedicated strictly to anterior segment imaging are limited to Time-domain OCT method, which is relatively slow [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Anterior segment imaging with Spectral OCT system using a high-speed CMOS camera

Grulkowski¹,

Gora²,

Szkulmowski³

et al. 2009

Opt. Express

154

124

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Abstract:We describe a new ultrahigh speed Spectral OCT instrument making use of a CMOS camera and demonstrate high quality in vivo imaging of the anterior segment of the human eye. The high flexibility of the designed imaging system allows a wide range of imaging protocols. Two-and three-dimensional high quality OCT images of the cornea, the anterior chamber and the crystalline lens are presented. A high acquisition rate, up to 135,000 A-scans/second enables three-dimensional reconstruction of the anterior segment during lenticular accommodation, blinking and pupillary reaction to light stimulus. We demonstrate OCT tomographic real time imaging of the lens dynamics during accommodation and high quality OCT cross-sectional images of the entire anterior segment of the eye from the cornea up to posterior part of the crystalline lens. 2009 Optical Society of America

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“…Video acquisitions of rotating Scheimpflug sections like Pentacam and horizontally scanning vertical slit beams like Orbscan combine multiple 2-dimensional sections to reconstruct the 3-dimensional anatomy of the cornea and anterior chamber [4]. The IOL Master is a noncontact optical coherence biometry device that measures axial length and other ocular components [5].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Anterior Chamber Depth Using Visante Optical Coherence Tomography, Slitlamp Optical Coherence Tomography, IOL Master, Pentacam and Orbscan IIz

Dinç¹,

Görgün²,

Öncel³

et al. 2010

Ophthalmologica

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Aims: To assess and compare the anterior chamber depth (ACD) by different anterior segment imaging techniques. Methods: Eighty healthy eyes of 40 patients were recruited, and 3 consecutive measurements of ACD were determined prospectively utilizing Visante optical coherence tomography (OCT), slitlamp (SL) OCT, IOL Master, Pentacam and Orbscan IIz. The statistical significance of interdevice differences between measurements was evaluated by one-way ANOVA and Bland-Altman analysis. The repeatability of 3 consecutive measurements was analyzed by repeated-measures ANOVA. Results: The mean ACD was 2.98 ± 0.29, 2.85 ± 0.29, 3.33 ± 0.42, 2.93 ± 0.30 and 2.80 ± 0.29 mm with Visante OCT, SL-OCT, IOL Master, Pentacam and Orbscan IIz, respectively. All devices displayed a high intrasession repeatability (repeated-measures ANOVA, p > 0.05). ACD measurements obtained by the IOL Master were significantly greater compared to other devices. ACD values detected by Visante OCT and SL-OCT, Pentacam and Orbscan IIz were not clinically interchangeable, even though no statistically significant difference was detected. Conclusion: Although noncontact ACD measurements using all modalities were easy to handle and demonstrated good repeatability, the tested devices were not regarded as compatible. Hence, the clinician should take the different modalities into consideration during ACD assessment using various devices.

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Anterior segment imaging: New milestones, new challenges

Cited by 13 publications

References 10 publications

Influence of Corneal Curvature on Central and Paracentral Pachymetry With Optical Coherence Tomography

Influence of Corneal Curvature on Central and Paracentral Pachymetry With Optical Coherence Tomography

Anterior segment imaging with Spectral OCT system using a high-speed CMOS camera

Assessment of Anterior Chamber Depth Using Visante Optical Coherence Tomography, Slitlamp Optical Coherence Tomography, IOL Master, Pentacam and Orbscan IIz

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