Results 31 to 40 of about 6,238 (208)

Automatic Quantitative Assessment of Lens Opacities Using Two Anterior Segment Imaging Techniques: Correlation with Functional and Surgical Metrics

Diagnostics, 2022
The purpose of this study is to quantitatively assess lens opacity, using a swept-source optical coherence tomography (SS-OCT) device for anterior segment assessment, and establish the correlation with Scheimpflug imaging, corrected distance visual ...
Lars H. B. Mackenbrock, Grzegorz Łabuz, Timur M. Yildirim, Gerd U. Auffarth, Ramin Khoramnia   +4 more
doaj   +1 more source

The variability of corneal and anterior segment parameters in keratoconus [PDF]

, 2016
Purpose: To analyse, describe and test diverse corneal and anterior segment parameters in normal and keratoconic eyes to better understand the geometry of the keratoconic cornea. Method: 44 eyes from 44 keratoconic patients and 44 eyes from 44 healthy
Cardona Torradeflot, Genís, Gispets Parcerisas, Joan, Lupón Bas, Núria, Mas Aixalà, Enric   +3 more
core   +1 more source

Keratoconus Detection Based on a Single Scheimpflug Image

Translational Vision Science & Technology, 2020
To introduce a new approach for keratoconus detection based on corneal microstructure observed in vivo derived from a single Scheimpflug image.Scheimpflug single-image snapshots from 25 control subjects and 25 keratoconus eyes were analyzed; from each group, five subjects were randomly selected to provide out-of-sample data.
Consejo, Alejandra, Solarski, Jedrzej, Karnowski, Karol, Rozema, Jos J, Wojtkowski, Maciej, Iskander, D. Robert   +5 more
openaire   +3 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

Fourier Ptychography with Scheimpflug Optics for Multi-Aperture Applications [PDF]

, 2017
We present a new optical configuration using the Scheimpflug principle for Fourier ptychography microscopy. This configuration minimizes the aberrations present in the off-axis lenses of a multi-aperture Fourier ptychography setup. A 3D printed setup was
Harvey, Andrew R., Konda, Pavan Chandra, Taylor, Jonathan   +2 more
core   +1 more source

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

Posterior corneal surface stability after femtosecond laser-assisted keratomileusis [PDF]

, 2015
The purpose of this study was to evaluate posterior corneal surface variation after femtosecond laser-assisted keratomileusis in patients with myopia and myopic astigmatism. Patients were evaluated by corneal tomography preoperatively and at 1, 6, and 12
Cagini, Carlo, Fiore, Tito, Fruttini, Daniela, Lupidi, Marco, Messina, Marco, Piccinelli, Francesco, SPADEA, LEOPOLDO   +6 more
core   +3 more sources

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

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