Results 61 to 70 of about 2,262 (162)

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

Comparison of Scheimpflug imaging parameters between steep and keratoconic corneas of Caucasian eyes

Clinical Ophthalmology, 2016
Tukezban Huseynova,1 Farah Abdulaliyeva,2 Michele Lanza3 1Briz-L Eye Clinic, 2National Ophthalmology Center, Baku, Azerbaijan; 3Second University of Naples, Caserta, Campania, Italy Purpose: To compare the keratometric and pachymetric parameters of ...
Huseynova T, Abdulaliyeva F, Lanza M
doaj  

Evaluation of indices for the assessment and classification of keratoconus based on optical coherence tomography and Scheimpflug technology

Ophthalmic and Physiological Optics, Volume 45, Issue 2, Page 391-404, March 2025.
Abstract Purpose To compare the parameters and indices of a novel swept‐source optical coherence tomography device (SS‐OCT, ANTERION) with those of a rotating Scheimpflug camera (RSC)‐based tomograph (Pentacam) in normal and keratoconic (KC) eyes. Methods This prospective, monocentric, cross‐sectional study included individuals with unoperated normal ...
Robert Herber, Janine Lenk, Lisa Ramm, Dierk Wittig, Maria Magdalena Patzner, Lutz E. Pillunat, Frederik Raiskup   +6 more
wiley   +1 more source

Non‐orthogonal spectacle correction for irregular astigmatism

Ophthalmic and Physiological Optics, Volume 45, Issue 1, Page 210-220, January 2025.
Abstract Purpose To investigate the potential improvement in visual acuity and subjective perception of image quality in patients with keratoconus using non‐orthogonal correction (NOC) cylinder trial lenses where the steep and flat power meridians are set at angles less or greater than 90°. Methods A set of NOC plano/cylindrical trial lenses, where the
Adela Hulpus, Ritchie Henry, Lynn White, Bernardo T. Lopes, Vito Romano, Ahmed Abass   +5 more
wiley   +1 more source

Corneal power changes with Scheimpflug rotating camera after hyperopic LASIK

Medicine, 2018
Abstract To evaluate surgically induced refractive change (SIRC) by manifest refraction and corneal power changes using an automated keratometer and Scheimpflug rotating camera, and to find the best keratometric measurements reflecting SIRC after hyperopic laser-assisted in situ keratomileusis (LASIK).
Whang, Woong-Joo, Yoo, Young-Sik, Joo, Choun-Ki   +2 more
openaire   +2 more sources

The Impact of Horizontal Marking on the VisuMax Surgical Bed Headrest on the Outcomes of Myopic Astigmatism Correction With Small Incision Lenticule Extraction

Journal of Ophthalmology, Volume 2025, Issue 1, 2025.
Aims: To investigate the impact of horizontal markings on the VisuMax surgical bed headrest on the accuracy of astigmatism correction in small incision lenticule extraction (SMILE). Methods: This retrospective study categorized preoperative astigmatism severity into low‐astigmatism (−0.25 to −1.75 D) and moderate‐to‐high astigmatism (−2.00 to −4.50 D).
Yun Wang, Xiaofeng Zhang, Wenwen Pan, Li Wang, Jing Lou, Yue Xu, Maja Bohac   +6 more
wiley   +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

Dynamic ultra high speed Scheimpflug imaging for assessing corneal biomechanical properties

Revista Brasileira de Oftalmologia, 2013
OBJECTIVE: To describe a novel technique for clinical characterization of corneal biomechanics using non-invasive dynamic imaging. METHODS: Corneal deformation response during non contact tonometry (NCT) is monitored by ultra-high-speed (UHS) photography.
Renato Ambrósio Jr, Isaac Ramos, Allan Luz, Fernando Correa Faria, Andreas Steinmueller, Matthias Krug, Michael W. Belin, Cynthia Jane Roberts   +7 more
doaj   +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