Results 31 to 40 of about 1,834,076 (153)

Simultaneous optical coherence tomography and Scheimpflug imaging using the same incident light [PDF]

, 2020
For any single anterior chamber cross-sectional (tomographic) imaging method, there is a practical compromise between image size and image resolution. In order to obtain large field-of-view cross-sectional images of the whole anterior chamber and high ...
Ye, Sicong, Shen, Yaochun, Williams, Bryan M, Williams, Bryan M., Li, Xiaoran, Lawman, Samuel, Zheng, Yalin   +6 more
core   +3 more sources

Scheimpflug imaging in anterior megalophthalmos

Indian Journal of Ophthalmology, 2013
We report an anterior megalophthalmos case with decreased corneal thickness and show the findings using Scheimpflug imaging. A 25-year-old male was diagnosed with anterior megalophthalmos. In both eyes, enlarged corneal length was measured. Beside a comparatively good visual acuity, a thin but clear cornea, a fairly deep anterior chamber, and central ...
Nemeth, Gabor, Hassan, Ziad, Berta, Andras, Modis, Laszlo   +3 more
openaire   +2 more sources

Machine learning helps improve diagnostic ability of subclinical keratoconus using Scheimpflug and OCT imaging modalities

Eye and Vision, 2020
Purpose To develop an automated classification system using a machine learning classifier to distinguish clinically unaffected eyes in patients with keratoconus from a normal control population based on a combination of Scheimpflug camera images and ...
Ce Shi, Mengyi Wang, Tiantian Zhu, Ying Zhang, Yufeng Ye, Jun Jiang, Sisi Chen, Fan Lu, Meixiao Shen   +8 more
doaj   +1 more source

Analysis of keratometric measurements in accordance with axial length in an aged population

Scientific Reports, 2022
To investigate keratometric measurements according to axial length in an aged population. Patients requiring cataract surgery with keratometric measurements from four different ophthalmic devices (autorefractor/keratometer, Scheimpflug imaging, corneal ...
Sung Uk Han, Soyoung Ryu, Hyunjean Jung, Hyunmin Ahn, Sangyeop Kim, Ikhyun Jun, Kyoung Yul Seo, Tae-im Kim   +7 more
doaj   +1 more source

Forme Fruste Keratoconus Imaging and Validation via Novel Multi-Spot Reflection Topography

Case Reports in Ophthalmology, 2013
Background/Aims: This case report aims to evaluate safety, efficacy and applicability of anterior surface imaging in a patient with forme fruste keratoconus (FFKC) based on a novel multi-spot, multicolor light-emitting-diode (LED) tear film-reflection ...
Anastasios John Kanellopoulos, George Asimellis   +1 more
doaj   +1 more source

Combined Stereoscopic Particle Image Velocimetry and Line Integral Convolution Methods: Application to a Sphere Sedimenting Near a Wall in a Non-Newtonian Fluid. [PDF]

, 2005
The flow fields for a sphere sedimenting through a Newtonian and two non-Newtonian liquids near a wall in a square tank are investigated using 3-D stereoscopic particle image velocimetry (PIV) and line integral convolution (LIC) methods.
Finnis, Mark V., Tatum, J. A., Harrison, G. M., Lawson, Nicholas J.   +3 more
core   +4 more sources

Role of epithelial mapping in the differentiation between early keratoconus and high regular astigmatism using spectral-domain optical coherence tomography

Journal of the Egyptian Ophthalmological Society, 2023
Pur6pose To detect epithelial thickness-based diagnostic variables to detect early keratoconus (KC) and differentiate cases of early KC from high regular astigmatism, especially if abnormal topographic changes are present.
Sameh M Abdelfadeel, Noha M Khalil, Lobna M Khazbak, Mohamed Karim Sidky   +3 more
doaj   +1 more source

Evaluation of Posterior Astigmatism Measured With Scheimpflug Imaging [PDF]

Cornea, 2014
Our aim was to assess the corneal power, axis, and age dependence of the anterior and posterior corneal surfaces with Scheimpflug imaging.Patients older than 10 years without a history of ocular surgery, corneal diseases, contact lens wearing, or severe dry eye were enrolled.
Nemeth, Gabor, Berta, Andras, Lipecz, Agnes, Hassan, Ziad, Szalai, Eszter, Modis, Laszlo   +5 more
openaire   +2 more sources

COMPARISON BETWEEN AS-OCT, SCHEIMPFLUG IMAGING AND GONIOSCOPY IN EVALUATION OF ANTERIOR CHAMBER ANGLE [PDF]

Zagazig University Medical Journal, 2018
Background: The gold standard technique for estimating the anterior chamber angle (ACA) width is gonioscopy; however, there are certain disadvantages with this method, Recently, a number of instruments have been introduced to provide more precise ...
doaj   +1 more source

Scheimpflug imaging of acute myopia secondary to topiramate use

Indian Journal of Ophthalmology, 2018
Pawan Prasher, Sujan Singh
doaj   +3 more sources