scholarly journals Ultrahigh-Resolution Measurement by Optical Coherence Tomography of Dynamic Tear Film Changes on Contact Lenses

2010 ◽  
Vol 51 (4) ◽  
pp. 1988 ◽  
Author(s):  
Qi Chen ◽  
Jianhua Wang ◽  
Aizhu Tao ◽  
Meixiao Shen ◽  
Shuliang Jiao ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Contact Lenses ◽  
Tear Film ◽  
Optical Coherence ◽  
Ultrahigh Resolution ◽  
Resolution Measurement

Measurement of Tear Film Thickness Using Ultrahigh-Resolution Optical Coherence Tomography

2013 ◽  
Vol 54 (8) ◽  
pp. 5578 ◽  
Author(s):  
René M. Werkmeister ◽  
Aneesh Alex ◽  
Semira Kaya ◽  
Angelika Unterhuber ◽  
Bernd Hofer ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Film Thickness ◽  
Tear Film ◽  
Optical Coherence ◽  
Ultrahigh Resolution

scholarly journals Visualization of the Precorneal Tear Film Using Ultrahigh Resolution Optical Coherence Tomography in Dry Eye

2012 ◽  
Vol 38 (4) ◽  
pp. 240-244 ◽  
Author(s):  
Lele Cui ◽  
Jianhua Wang ◽  
Victor L. Perez ◽  
Meixiao Shen ◽  
Yimin Yuan ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Dry Eye ◽  
Tear Film ◽  
Optical Coherence ◽  
Ultrahigh Resolution

scholarly journals Effect of different lubricant eye gels on tear film thickness as measured with ultrahigh-resolution optical coherence tomography

2016 ◽  
Vol 95 (4) ◽  
pp. e307-e313 ◽  
Author(s):  
Piotr A. Wozniak ◽  
Doreen Schmidl ◽  
Ahmed M. Bata ◽  
Klemens Fondi ◽  
Katarzyna J. Witkowska ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Film Thickness ◽  
Tear Film ◽  
Optical Coherence ◽  
Ultrahigh Resolution

scholarly journals Developments in Contact Lens Imaging: New Applications of Optical Coherence Tomography

2019 ◽  
Vol 9 (13) ◽  
pp. 2580
Author(s):  
Joanna Stachura ◽  
Małgorzata Seredyka-Burduk ◽  
Ilona Piotrowiak-Słupska ◽  
Magdalena Kaszuba-Modrzejewska ◽  
Jagoda Rzeszewska-Zamiara ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Contact Lens ◽  
High Speed ◽  
Contact Lenses ◽  
Tear Film ◽  
Laser Source ◽  
Optical Coherence ◽  
Cross Sectional ◽  
Swept Source ◽  
Swept Source Oct

Optical coherence tomography (OCT) is a high-speed and non-contact optical imaging technology widely used for noninvasive cross-sectional imaging of biological objects. Two main OCT technologies have been developed: time domain and Fourier domain technologies. The latter can be further divided into spectral domain OCT, which uses a broadband light source and a spectrometer as a detector, and swept source OCT, which employs a quickly-rotating laser source. Advances in OCT technology have made it one of the most helpful devices in ophthalmic practice. Fourier OCT has revolutionized imaging of the posterior segment of the eye, as well as of anterior structures and has enhanced the ability to diagnose and manage patients. It provides high-resolution information about the tear film, contact lens (CL), a qualitative and quantitative assessment of the anterior eye that is important in contact lens fitting, and allows possible eye surface changes while wearing contact lenses to be monitored. Potential swept source OCT technology applications include industrial processes of lens design and quality control. In this paper, we describe clinical applications and outline a variety of multifunctional uses of OCT in the field of refractive error correction with contact lenses.

scholarly journals Characterization of Soft Contact Lens Edge Fitting during Daily Wear Using Ultrahigh-Resolution Optical Coherence Tomography

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Lele Cui ◽  
Sisi Chen ◽  
Weihe Zhou ◽  
Kaixuan Sheng ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Contact Lens ◽  
Contact Lenses ◽  
Optical Coherence ◽  
Soft Contact ◽  
Ultrahigh Resolution ◽  
Soft Contact Lenses ◽  
Soft Contact Lens ◽  
Lens Wear ◽  
Peripheral Cornea

Purpose. To determine conjunctival overlap over the edge of soft contact lens and to visualize the peripheral postlens tear film (PoLTF) underneath soft contact lenses using ultrahigh-resolution optical coherence tomography (UHR-OCT). Methods. Twenty participants (4 males and 16 females, 23.0 ± 3.7 years) were fitted with two different types of soft contact lenses randomly. The limbus with lens was imaged with the UHR-OCT at the horizontal meridian every two hours up to 6 hours during lens wear. The conjunctival overlap was ranked as the percentage of the edge covered by the conjunctiva. The frequency of occurrence for visualized peripheral PoLTF was determined. Results. The average conjunctival overlaps at insertion were 49% and 73% for galyfilcon A and balafilcon A lenses and increased significantly to 84% and 90% by 6 hours of lens wear (P<0.001). Lenses with rounded edges had more conjunctival overlap than the lenses with angled edges (P=0.014). There were significant decreases for PoLTF on the conjunctiva (P=0.014) and peripheral cornea (P=0.004) over the study period compared to insertion. The percentage of subjects with PoLTF on the conjunctiva (32.5%) and peripheral cornea (36%) were greater in subjects wearing balafilcon A lenses (P=0.017). Conclusions. Increased conjunctival overlap over the lens edges and reduced PoLTF underneath the peripheral region of soft contact lenses were shown during lens daily wear. The lens edge configuration may play a role in conjunctival response and peripheral PoLTF.

scholarly journals Automatic assessment of tear film and tear meniscus parameters in healthy subjects using ultrahigh-resolution optical coherence tomography

2019 ◽  
Vol 10 (6) ◽  
pp. 2744 ◽  
Author(s):  
Hannes Stegmann ◽  
Valentin Aranha dos Santos ◽  
Alina Messner ◽  
Angelika Unterhuber ◽  
Doreen Schmidl ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Healthy Subjects ◽  
Tear Film ◽  
Optical Coherence ◽  
Automatic Assessment ◽  
Ultrahigh Resolution ◽  
Tear Meniscus

Ultrahigh resolution optical coherence tomography of the monkey fovea. Identification of retinal sublayers by correlation with semithin histology sections

2004 ◽  
Vol 78 (6) ◽  
pp. 1117-1125 ◽  
Author(s):  
Elisabeth M. Anger ◽  
Angelika Unterhuber ◽  
Boris Hermann ◽  
Harald Sattmann ◽  
Christian Schubert ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence ◽  
Ultrahigh Resolution

scholarly journals Maximum-likelihood estimation in Optical Coherence Tomography in the context of the tear film dynamics

2013 ◽  
Vol 4 (10) ◽  
pp. 1806 ◽  
Author(s):  
Jinxin Huang ◽  
Eric Clarkson ◽  
Matthew Kupinski ◽  
Kye-sung Lee ◽  
Kara L. Maki ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Maximum Likelihood ◽  
Maximum Likelihood Estimation ◽  
Tear Film ◽  
Likelihood Estimation ◽  
Optical Coherence

Compact, low-cost Ti:Al_2O_3 laser for in vivo ultrahigh-resolution optical coherence tomography

2003 ◽  
Vol 28 (11) ◽  
pp. 905 ◽  
Author(s):  
A. Unterhuber ◽  
B. Považay ◽  
B. Hermann ◽  
H. Sattmann ◽  
W. Drexler ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Low Cost ◽  
Optical Coherence ◽  
Ultrahigh Resolution
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