Results 71 to 80 of about 513,793 (186)

Extremely asymmetric ectasia: Tomographically unilateral keratoconus

Acta Ophthalmologica, Volume 103, Issue 5, Page 530-538, August 2025.
Abstract Purpose To investigate the characteristics of apparently stable forms of tomographically unilateral keratoconus (KC). Methods In this retrospective case–control study, strict unilaterality criteria were applied to select tomographically unilateral cases with ≥3 years of follow‐up.
Hasan Shabani, Wishal D. Ramdas, Magda A. Meester‐Smoor, Dimitris Rizopoulos, Caroline C. W. Klaver, Bart T. H. van Dooren, Annette J. M. Geerards   +6 more
wiley   +1 more source

Scheimpflug imaging of the post lens tear film during contact lens wear [PDF]

, 2014
A new imaging methodology is described to visualise the post lens tear film (PLTF) during contact lens wear. A rotating-Scheimpflug camera in combination with sodium fluorescein allows evaluation of the PLTF for different contact lens modalities,
Vincent, Stephen J., Alonso-Caneiro, David, Collins, Michael J., Shaw, Alyra J.   +3 more
core  

Influence of artificial tears on corneal parameter measurement using three different devices: Keratometry and Scheimpflug technology, a randomized trial

Acta Ophthalmologica, Volume 103, Issue 5, Page e310-e317, August 2025.
Abstract Purpose To evaluate the effect of artificial tear (AT) application on the repeatability of corneal parameters with three different devices. Methods In this prospective, randomized clinical trial, 145 patients were measured with one of three devices in the Department of Ophthalmology, Goethe University, Frankfurt, Germany.
Titus Schug, Thomas Kohnen, Klemens Paul Kaiser, Christoph Lwowski   +3 more
wiley   +1 more source

Assessing UVA and Laser‐Induced Crosslinking via Brillouin Microscopy

Journal of Biophotonics, Volume 18, Issue 5, May 2025.
UVA crosslinking is the primary treatment to combat keratoconus. Nevertheless, unwanted side effects and limitations due to nonselective irradiation lead to the investigation of alternative irradiation treatments. This study shows similar changes in the Brillouin frequency shift of corneas crosslinked with UVA irradiation and a NIR femtosecond laser ...
Christian A. Iriarte‐Valdez, Johannes Wenzel, Emilie Baron, Alexandra Y. Claus, Stefan Kalies, Karsten Sperlich, Oliver Stachs, Maria Leilani Torres‐Mapa, Alexander Heisterkamp   +8 more
wiley   +1 more source

Quantifying tear exchange during rigid contact lens wear using corneoscleral profilometry: A proof of concept study

Ophthalmic and Physiological Optics, Volume 45, Issue 3, Page 598-606, May 2025.
Abstract Introduction Tear exchange during contact lens wear is essential for ocular surface integrity, facilitating debris removal, and maintaining corneal metabolism. Fluorophotometry and fluorogram methods are typically used to measure tear exchange, which require hardware modifications to a slit lamp biomicroscope.
Asif Iqbal, Damien Fisher, David Alonso‐Caneiro, Michael J. Collins, Stephen J. Vincent   +4 more
wiley   +1 more source

Influence of brightness artefacts on corneal densitometry

Ophthalmic and Physiological Optics, Volume 45, Issue 3, Page 637-643, May 2025.
Abstract Purpose To quantify objectively the influence of brightness artefacts inherent in Scheimpflug tomography on corneal densitometry (CD) estimates. Methods Fifty‐seven healthy participants aged 30.9 ± 13.7 years (range 17–60 years) were examined with a Ziemer Galilei G2 Scheimpflug tomographer.
Ana R. Arizcuren, Laura Remón, Alejandra Consejo   +2 more
wiley   +1 more source

Measurements of anterior chamber depth, white-to-white distance, anterior chamber angle, and pupil diameter using two Scheimpflug imaging devices [PDF]

, 2014
Purpose: To compare the ocular anterior chamber depth, white-to-white distance, anterior chamber angle, and pupil diameter, as measured with two different Scheimpflug imaging devices.
Antonio Jesus Del Águila-Carrasco (5763764), Robert Montés-Micó (4695973), Santiago García-Lázaro (4655917), Daniel Monsálvez-Romín (4695976), Alberto Domínguez-Vicent (2150602)   +4 more
core   +1 more source

International Values of Central Pachymetry in Normal Subjects by Rotating Scheimpflug Camera

Asia-Pacific Journal of Ophthalmology, 2012
In corneal refractive surgery, postoperative ectasia risk assessment routinely includes pachymetric analysis at the apex and thinnest point. We examined whether these data differ worldwide and constructed preliminary country-specific normative thresholds.This was a multicenter, cross-sectional study.Using the Pentacam Eye Scanner (OCULUS GmbH, Wetzlar,
Matthew T, Feng, Joan T, Kim, Renato, Ambrósio, Michael W, Belin, Satinder P S, Grewal, Wang, Yan, Mohamed Shafik, Shaheen, Charlotte A, Jordan, Charles, McGhee, Naoyuki, Maeda, Tobias H, Neuhann, H Burkhard, Dick, Andreas, Steinmueller   +12 more
openaire   +2 more sources

Corneal topographic indices of scheimpflug camera in type 2 diabetic and non-diabetic elderly populations. [PDF]

BMC Ophthalmol, 2023
Hashemi A, Khabazkhoob M, Narooei F, Mortazavi A, Hashemi H.   +4 more
europepmc   +1 more source

Comparison of a New Scheimpflug Camera and Swept-Source Optical Coherence Tomographer for Measurements of Anterior Segment Parameters. [PDF]

Ophthalmol Ther, 2023
Huang X, Lin X, Yang Y, Yu J, Wang J, Li K, Wang Y, Savini G, Schiano-Lomoriello D, Zhou X, Huang J.   +10 more
europepmc   +1 more source