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Corneal pachymetry - Top 30 Publications

Accuracy of Visual Estimation of LASIK Flap Thickness.

To assess the accuracy of surgeons' visual estimation of LASIK flap thickness when created by a femtosecond laser by comparing it to ultrasound measurements.

Comparison of corneal thickness measurements using ultrasound pachymetry, ultrasound biomicroscopy, and digital caliper in frozen canine corneas.

To evaluate the clinical efficacy among ultrasound pachymetry (UP), ultrasound biomicroscopy (UBM), and manual measurement (MM) with digital caliper by comparing corneal thickness (COT) values obtained from frozen canine corneas ex vivo.

Iontophoretic collagen cross-linking versus epithelium-off collagen cross-linking for early stage of progressive keratoconus - 3 years follow-up study.

To compare 3-year iontophoretic corneal collagen cross-linking (I-CXL) outcomes with epithelium-off corneal collagen cross-linking (epi-off CXL) for early stage of progressive keratoconus.

Corneal backward scattering and higher-order aberrations in children with vernal keratoconjunctivitis and normal topography.

To investigate the corneal backward scattering and higher-order aberrations (HOAs) in children with vernal keratoconjunctivitis (VKC) and normal topography.

Comparison between Pentacam HR and Orbscan II after Hyperopic Photorefractive Keratectomy.

The aim of this study was to determine the agreement between Pentacam HR (Scheimpflug imaging, Oculus) and Orbscan II (scanning slit topography, Bausch and Lomb) in measuring corneal parameters after photorefractive keratectomy (PRK) for hyperopia.

Temporal and Spatial Flap Variability in Laser In-Situ Keratomileusis by Optical Coherence Tomography.

To study changes in flap thickness made with two different microkeratome heads across different corneal locations using anterior segment optical coherence tomography (OCT).

Topographic indices and pachymetry in healthy adolescents obtained with Sirius topographer.

To determine the normal values for the Sirius corneal topography, of some topographic indices and corneal pachymetry, in a healthy young adolescent population.

Conventional Versus Accelerated Collagen Cross-Linking for Keratoconus: A Comparison of Visual, Refractive, Topographic and Biomechanical Outcomes.

The aim was to compare the visual, refractive, topographic and biomechanical outcomes in patients with progressive keratoconus treated with either conventional or accelerated crosslinking at one year follow up.

Phenotypic Characterization of Corneal Endothelial Dystrophy in German Shorthaired and Wirehaired Pointers Using In Vivo Advanced Corneal Imaging and Histopathology.

To evaluate corneal morphology using ultrasonic pachymetry (USP), Fourier-domain optical coherence tomography (FD-OCT), and in vivo confocal microscopy (IVCM) in 2 related canine breeds-German shorthaired pointers (GSHPs) and German wirehaired pointers (GWHPs)-with and without corneal endothelial dystrophy (CED). This condition is characterized by premature endothelial cell degeneration leading to concomitant corneal edema and is similar to Fuchs endothelial corneal dystrophy.

Correlation between central corneal thickness and myopia.

To analyze the correlation between central corneal thickness (CCT) and myopia in refractive surgery candidates.

Predictive Factors for Corneal Clearance After Descemetorhexis Without Endothelial Keratoplasty.

To study preoperative factors that possibly contribute to corneal clearance after Descemetorhexis without endothelial keratoplasty (DWEK) and to determine the most successful surgical technique for the procedure.

Intrasession repeatability of ocular anatomical measurements obtained with a multidiagnostic device in healthy eyes.

To evaluate the intrasession repeatability of anterior chamber depth (ACD), central (CCT) and peripheral corneal thickness (PCT), white-to-white diameter (WTW), and irido-corneal angle (IA) measurements obtained with a multidiagnostic device in healthy eyes.

Effect of central corneal thickness on intraocular pressure and comparison of Topcon CT-80 non-contact tonometry with Goldmann applanation tonometry.

To compare intraocular pressure (IOP) measurements obtained with the Topcon CT-80 non-contact tonometer (NCT) and Goldmann applanation tonometer (GAT), in different ranges of IOP in normal and glaucoma subjects, and to assess the influence of central corneal thickness (CCT) on the IOP measurements in Asian Indian eyes.

Femtosecond laser-assisted cataract surgery versus 2.2 mm clear corneal phacoemulsification.

Phacoemulsification is the surgical procedure of choice for cataract, providing excellent visual and safety outcomes. Femtosecond laser-assisted cataract surgery (FLACS) is an addition to the surgical armamentarium. The study aims to compare the outcomes of FLACS using LenSx™ (Alcon Inc., USA) to standard 2.2 mm clear corneal phacoemulsification. Prospective case-control, comparative, interventional study was conducted in a tertiary care center.

Intereye comparison of ocular factors in normal tension glaucoma with asymmetric visual field loss in Korean population.

To identify ocular parameters corresponding to asymmetric visual field (VF) loss in normal tension glaucoma (NTG) through intereye comparisons.

Comparison of central corneal thickness with four different optical devices.

To compare the consistency between the average scores of the contact central corneal thickness measurements from ultrasound pachymetry devices still gold standard, such as iPac(®) and Echoscan US-500, and noncontact measurements via Pentacam HR and Sirius topography.

New perspectives on the detection and progression of keratoconus.

Laser refractive surgery has increased markedly in recent years, making the detection of corneal abnormalities extremely relevant. For this reason, an accurate diagnosis of clinical or subclinical keratoconus is critical. Corneal topography is the primary diagnostic tool for keratoconus detection, and pachymetry data and corneal aberrations are also commonly used. Recently, tomographic measurements using optical coherence tomography and corneal biomechanical indices have been used. In incipient and subclinical keratoconus, the use of a single parameter as a diagnostic factor is not sufficiently accurate. In these cases, the use of algorithms and predictive models is necessary. In addition, determining whether the disease will progress is crucial to selecting the most appropriate treatment. Some factors, such as age, keratometric indices, corneal elevation data, and corneal thickness, seem to be useful in predicting keratoconus progression.

Characterisation of the porcine eyeball as an in-vitro model for dry eye.

To characterise the anatomical parameters of the porcine eye for potentially using it as a laboratory model of dry eye.

Objective and subjective diagnostic parameters in the fellow eye of unilateral keratoconus.

Keratoconus (KC) is usually a bilateral corneal ectatic disease. For significant asymmetric presentation (so called unilateral KC), the fellow eye has the mildest and earliest form of the disease, which is typically called forme fruste keratoconus. The aim of this study was to evaluate the sensitivity and specificity of parameters derived from a Scheimpflug imaging system (Pentacam) as well as the changes in the quality of mesopic vision in the apparently normal fellow eye (forme fruste) to detect the earliest and most sensitive parameters.

Peripheral corneal cross-linking (P-CXL) for ultrathin corneas with severe keratoconus: a new technique.

Corneal cross-linking (CXL) is aimed at halting the progression of keratoconus and is widely considered to be the golden standard in its treatment. It is usually contraindicated, however, in patients with corneal thickness of less than 400 µm, leaving the ophthalmic surgeon no option, but to perform transepithelial CXL (epi-on), usually regarded as less effective. We report a novel approach for ultrathin corneas with severe keratoconus - peripheral corneal cross-linking (P-CXL), in which corneal epithelium is still removed but the apex of the cornea is left untouched. Hypo-osmolar riboflavin solution is used as well. P-CXL was performed on a remarkably developed stage IV keratoconus with the thinnest pachymetry of 215 µm, Kmax of 88.1 D and astigmatism of 11.2 D. Four months after P-CXL, the thinnest pachymetry increased by 42 µm, Kmax decreased by 1.4 D, and astigmatism also decreased by 3.2 D.

Comparison of Central Corneal Thickness using Anterior Segment Optical Coherence Tomography Versus Ultrasound Pachymetry.

Corneal thickness is an important and sensitive indicator of corneal health. It is useful in monitoring corneal diseases such as corneal oedema and keratoconus, and selecting patients for refractive surgery. Central Corneal Thickness (CCT) is a risk factor for Primary Open-Angle Glaucoma (POAG).

Accelerated Epi-On Versus Standard Epi-Off Corneal Collagen Cross-Linking for Progressive Keratoconus in Pediatric Patients.

To evaluate and compare the effectiveness and safety of accelerated transepithelial (A-epi-on) corneal collagen cross-linking (CXL) with standard CXL (epi-off) for children with progressive keratoconus.

Long-term outcomes of corneal cross-linking for keratoconus in pediatric patients.

To report the long-term outcomes of corneal cross-linking (CXL) in pediatric patients with bilateral progressive keratoconus.

Conventional Corneal Collagen Cross-Linking Versus Transepithelial Diluted Alcohol and Iontophoresis-Assisted Corneal Cross-Linking in Progressive Keratoconus.

To compare clinical outcomes of conventional corneal cross-linking (C-CXL) and diluted alcohol and iontophoresis-assisted corneal cross-linking (DAI-CXL) for the treatment of progressive keratoconus (KC).

Corneal topography and keratometry changes after glued intraocular lens implantation.

To analyze the alterations in corneal topography and keratometry (K) after glued transscleral-fixated intraocular lens (IOL) implantation.

Posterior Amorphous Corneal Dystrophy Associated With Keratoglobus: A Case Report.

Posterior amorphous corneal dystrophy (PACD) is a rare disorder characterized by sheet-like opacification of the posterior corneal stroma, corneal thinning, and decreased corneal curvature. It is not known to be associated with progressive corneal ectasia. In this report, we examine the course of a patient with PACD who developed bilateral keratoglobus-type corneal ectasia.

A Technique to Reduce Incidence of Opaque Bubble Layer Formation During LASIK Flap Creation Using the VisuMax Femtosecond Laser.

To identify risk factors for opaque bubble layer (OBL) formation and compare the incidence of OBL using a cone modification technique versus the original technique for LASIK flap creation using the VisuMax laser (Carl Zeiss Meditec, Jena, Germany).

Diabetes and pachymetry changes in pregnancy.

Purpose of this study is to evaluate changes in the central corneal thickness (CCT) in patients during the third trimester and postpartum phases of normal pregnancy, pregestational diabetes mellitus (DM), and gestational diabetes mellitus (GDM).

Accuracy of Alcon WaveLight(®) EX500 optical pachymetry during LASIK.

To study the accuracy and reliability of optical pachymetry using the Alcon WaveLight EX500 during laser-assisted in situ keratomileusis (LASIK).

Reliability of Entire Corneal Thickness Mapping in Normal Post-Laser in situ Keratomileusis and Keratoconus Eyes Using Long Scan Depth Spectral Domain Optical Coherence Tomography.

To investigate the repeatability and reproducibility of mapping the entire corneal thickness using spectral domain optical coherence tomography (SD-OCT).