Predictors of Peripapillary and Macular Optical Microangiography Measurements in Healthy Eyes

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Tanima Bansal ◽  
Suneeta Dubey ◽  
Harsha L. Rao ◽  
Monica Gandhi ◽  
Julie Pegu
Keyword(s):  
Optical Microangiography ◽  
Healthy Eyes

scholarly journals Spectral-domain optical coherence tomography for evaluating palisades of Vogt in ocular surface disorders with limbal involvement

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ying-Yi Chen ◽  
Yi-Chen Sun ◽  
Chia-Ying Tsai ◽  
Hsiao-Sang Chu ◽  
Jo-Hsuan Wu ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Ocular Surface ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Slit Lamp ◽  
Ocular Rosacea ◽  
Unilateral Disease ◽  
Healthy Eyes ◽  
Slit Lamp Biomicroscopy ◽  
Sd Oct

AbstractSpectral-domain optical coherence tomography (SD-OCT) has been used to observe the morphology of the palisades of Vogt (POV) with satisfactory resolutions. In this study, we used SD-OCT to examine the microstructure of the POV in ocular surface disorders with limbal involvement. We detect subclinical limbal pathologies based on five parameters, including (1) decreased epithelial thickness, (2) loss of the sharp stromal tip, (3) loss of the smooth epithelial-stromal interface, (4) dilated stromal vessels, and (5) decreased POV density. Eighteen eyes of 10 patients with advancing wavelike epitheliopathy (AWE) and 15 eyes of 9 patients with phlyctenular keratitis/ocular rosacea were recruited. SD-OCT could detect abnormal changes in the POV in 100% of the lesion sites. In presumed-healthy areas of the diseased eyes diagnosed by slit-lamp biomicroscopy, SD-OCT detected abnormal changes in the POV in 100% of the eyes in both groups. In patients with unilateral disease, abnormal changes in the POV were detected by SD-OCT in 50% and 100% of presumed-healthy eyes diagnosed by slit-lamp biomicroscopy in the AWE group and phlyctenular keratitis/ocular rosacea group, respectively. SD-OCT is powerful in detecting POV changes in ocular surface disorders and can provide useful information that cannot be provided by slit-lamp biomicroscopy.

Long-term intraocular pressure changes after femtosecond laser–assisted cataract surgery in healthy eyes and glaucomatous eyes

2019 ◽  
Vol 45 (2) ◽  
pp. 181-187 ◽  
Author(s):  
Avni A. Shah ◽  
Jeanie Ling ◽  
Niraj R. Nathan ◽  
Ashton J. Kalhorn ◽  
Qingxia Chen ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Pressure Changes ◽  
Healthy Eyes

Clinical evaluation of the repeatability of ocular aberrometry obtained with a new pyramid wavefront sensor

2018 ◽  
Vol 29 (6) ◽  
pp. 585-592 ◽  
Author(s):  
Ana B Plaza-Puche ◽  
Liberdade C Salerno ◽  
Francesco Versaci ◽  
Daniel Romero ◽  
Jorge L Alio
Keyword(s):  
Standard Deviation ◽  
Correlation Coefficient ◽  
Intraclass Correlation Coefficient ◽  
Pupil Size ◽  
Pupil Diameter ◽  
Intraclass Correlation ◽  
Wavefront Sensor ◽  
Mean Square ◽  
The Subject ◽  
Healthy Eyes

Purpose:To evaluate the intrasubject repeatability of the ocular aberrometry obtained with a new ocular pyramidal aberrometer technology in a sample of normal eyes.Methods:A total of 53 healthy eyes of 53 subjects with ages ranging from 18 to 45 years were included in this study. In all cases, three consecutive acquisitions were obtained. Intrasubject repeatability of the measurements with a pyramidal aberrometer was calculated. Intrasubject repeatability for 4.0- and 6.0-mm pupils was evaluated within the subject standard deviation (Sw) and intraclass correlation coefficient.Results:Low values of the Swand intraclass correlation coefficient outcomes close to 1 were observed for the sphere and cylinder at 3.0-mm pupil size. Most low Swand intraclass correlation coefficient values close to 1 were observed for total, low-order aberrations and higher-order aberrations root mean square and for each Zernike coefficient analysis (intraclass correlation coefficient ⩾0.798) at 4.0-mm pupil size, with more limited outcomes for the aberrometric coefficient of Z(4, 4) with an intraclass correlation coefficient of 0.683. For a 6.0 mm pupil diameter, low Swand intraclass correlation coefficient values close to 1 were observed for all aberrometric parameters or Zernike coefficients analyzed (intraclass correlation coefficient ⩾0.850).Conclusion:The new pyramidal aberrometer Osiris provides repeatable and consistent measurements of ocular aberrometry measurements in normal eyes.

scholarly journals Anterior Displacement of Lamina Cribrosa during Valsalva Maneuver in Young Healthy Eyes

PLoS ONE ◽  
2016 ◽  
Vol 11 (7) ◽  
pp. e0159663 ◽  
Author(s):  
Yong Woo Kim ◽  
Michael J. A. Girard ◽  
Jean Martial Mari ◽  
Jin Wook Jeoung
Keyword(s):  
Valsalva Maneuver ◽  
Lamina Cribrosa ◽  
Anterior Displacement ◽  
Healthy Eyes

Evaluation of Corneal Epithelial Thickness Imaged by High Definition Optical Coherence Tomography in Healthy Eyes

Cornea ◽  
2019 ◽  
Vol 38 (1) ◽  
pp. 62-66 ◽  
Author(s):  
Elmira Baghdasaryan ◽  
Tudor C. Tepelus ◽  
Kenneth M. Marion ◽  
Homayoun Bagherinia ◽  
SriniVas R. Sadda ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence ◽  
High Definition ◽  
Corneal Epithelial ◽  
Epithelial Thickness ◽  
Corneal Epithelial Thickness ◽  
Healthy Eyes

scholarly journals Biomechanical Properties of the Cornea Using a Dynamic Scheimpflug Analyzer in Healthy Eyes

2018 ◽  
Vol 59 (9) ◽  
pp. 1115 ◽  
Author(s):  
Hun Lee ◽  
David Sung Yong Kang ◽  
Byoung Jin Ha ◽  
Jin Young Choi ◽  
Eung Kweon Kim ◽  
...  
Keyword(s):  
Biomechanical Properties ◽  
Healthy Eyes

scholarly journals Anterior-Segment Swept-Source Ocular Coherence Tomography and Scheimpflug Imaging Agreement for Keratometry and Pupil Measurements in Healthy Eyes

2021 ◽  
Vol 10 (24) ◽  
pp. 5789
Author(s):  
Francisco Pérez-Bartolomé ◽  
Carlos Rocha-De-Lossada ◽  
José-María Sánchez-González ◽  
Silvia Feu-Basilio ◽  
Josep Torras-Sanvicens ◽  
...  
Keyword(s):  
Pupil Diameter ◽  
Anterior Segment ◽  
Swept Source ◽  
Ocular Coherence Tomography ◽  
Scheimpflug Imaging ◽  
Angle Kappa ◽  
Student’S T ◽  
Thickness Measurements ◽  
Healthy Eyes ◽  
Student’S T Test

This study examines agreement between the devices Anterion® and Pentacam HR® used for corneal and pupil measurements in healthy eyes. The parameters compared between the two devices were: anterior Km (D), anterior K2 (D), anterior K1 (D), anterior K1 axis (°), anterior astigmatism (D), anterior K max (D), posterior Km (D), posterior K2 (D), posterior K1 (D), posterior K1 axis (°), posterior astigmatism (D), CCT (µm), thinnest point thickness (µm), thinnest point X-coordinate (mm), thinnest point Y-coordinate (mm), pupil diameter (mm), pupil center-corneal vertex distance (mm) (angle kappa), pupil centroid angle (°), pupil centroid X-coordinate (mm), and pupil centroid Y-coordinate (mm). The Student’s t test for independent samples identified significant differences (p < 0.005) between devices for the measurements anterior and posterior flat K axis, posterior flat K, steep K, and mean K. For these last three measurements, although significant, none of the differences were clinically relevant. Corneal power and thickness measurements except Kf axis showed excellent agreement between Anterion and Pentacam. In a clinical setting we would not recommend the interchangeable use of Pentacam and Anterion for measurement of pupil parameters.

scholarly journals Factors influencing foveal avascular zone size in healthy eyes

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Sittikorn Laojaroenwanit ◽  
Adisai Varadisai ◽  
Pear Pongsachareonnont ◽  
Thanapong Somkijrungroj
Keyword(s):  
Foveal Avascular Zone ◽  
Zone Size ◽  
Factors Influencing ◽  
Avascular Zone ◽  
Healthy Eyes
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