Samuel Arba‐Mosquera
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Biomechanical, Visual, and Refractive Outcomes of Total Corneal Wavefront-Guided Transepithelial PRK With Accelerated CXL in Keratoconus Using Objective Stability Markers Open
Purpose: To evaluate the long-term safety and efficacy of simultaneous total corneal wavefront-guided transepithelial photorefractive keratectomy (TCWG-TransPRK) with accelerated corneal cross-linking (CXL) in mild to moderate keratoconus,…
Optimizing Predictive Models for Distance and Near Vision Outcomes in Presbyopic Surgery Using Machine Learning Open
Machine learning-based prediction models and the DCVG metric facilitate individualized clinical decision-making, improving patient counseling and optimizing the balance between near and distance vision in presbyopic treatment.
Total Corneal Wavefront-guided Ablation for Optical Improvement of a Patient After Radial Keratotomy and Before Cataract Surgery Open
Purpose: To report a case in which a corneal wavefront-guided ablation to regularize the cornea years after radial keratotomy was used as corneal optical improvement before cataract surgery. Methods: A 68-year-old woman presented with an e…
A case series study of laser refractive corneal surgery assisted by a virtual postoperative corneal simulation Open
Purpose A Virtual Postoperative Corneal Simulation may assist complex therapeutic laser refractive corneal surgery cases. This study aims to clinically validate the accuracy and precision of the ForeSight predicted corneal geometries compa…
Assessing Eye Movement Dynamics and Fixation Stability Between Eyes During Same-Session Bilateral LASIK Open
Purpose To investigate eye movement dynamics during excimer laser ablation, specifically femtosecond laser–assisted in situ keratomileusis (FS-LASIK), and compare movement patterns between the right eye (always operated on first) and the l…
Impact of Corneal-Hydration-Induced Changes in Ablation Efficiency During Refractive Surgery Open
(1) Background: A decrease in corneal hydration during refractive surgery is observed clinically as well as in laboratory settings, but the associated consequences are not yet fully understood. The purpose of this paper is to analyze the i…
The Impact of Preoperative Corneal Epithelial Refraction Toricity on Transepithelial Photorefractive Keratectomy for the Treatment of Hyperopia or Mixed Astigmatism Open
This study analyzed the impact of corneal epithelial refraction on the correction of hyperopic and mixed astigmatism eyes treated with transepithelial photorefractive keratectomy. From the epithelial refraction provided by the diagnostic d…
View article: Reducing Higher Order Aberrations after Keratorefractive Lenticule Extraction using Asymmetric Spacing Spot/Track Distances with Low Energy Levels
Reducing Higher Order Aberrations after Keratorefractive Lenticule Extraction using Asymmetric Spacing Spot/Track Distances with Low Energy Levels Open
Purpose: To compare the visual outcomes and changes in corneal higher order aberrations (HOAs) after keratorefractive lenticule extraction (KLEx) using conventional symmetric spot/track distance laser spacing versus modified asymmetric spo…
Comparison of asymmetric and symmetric offset ablation in myopic astigmatism patients Open
To compare differences in clinical outcomes of symmetric offset (SO) and asymmetric offset (AO) centration strategies in photorefractive keratectomy (PRK) in patients with myopia and/or astigmatism, forty refractive surgery candidates who …
The impact of Preoperative Epithelium on Transepithelial Photorefractive Keratectomy for the Treatment of Hyperopia and Mixed Astigmatism Open
Purpose: To calculate the impact of the refractive power associated with the epithelial thickness in transepithelial refractive corrections Setting: Aurelios Augenzentrum Recklinghausen, Germany Methods: We analyzed the impact of the epith…
Peri-operative Intrastromal Corneal Segmentation after creation of corneal cuts based on Laser Induced Optical Breakdown: A Perspective Study Open
Significance Assessing refractive correction techniques, such as Lenticule Extraction or LASIK proves instrumental in diagnostics and monitor treatment efficacy. Moreover, these evaluations aid in elucidating potential post-operative compl…
Automated Characterization of Intrastromal Corneal Cuts Induced by Two Femtosecond Laser Systems Using OCT Imaging Open
Optical coherence tomography (OCT) has gained momentum on segmenting anterior corneal substructures, such as treatment-induced flaps and lenticule cuts created by femtosecond lasers. However, recent semi-automated methods rely on manual ma…
A Refined Model for Ablation Through Cavitation Bubbles with Ultrashort Pulse Lasers Open
(1) Background: Ultrashort high-energy laser pulses may cause interaction mechanisms, including photodisruption and plasma-induced ablation in the medium. It is not always easy to distinguish between these two processes, as both interactio…
Comparison of asymmetric and symmetric centration strategies for photorefractive keratectomy in myopic astigmatism patients Open
Purpose: To compare differences in clinical outcomes of symmetric offset (SO) and asymmetric offset (AO) centration strategies in photorefractive keratectomy (PRK) in patients with myopia or myopic astigmatism. Methods: Forty refractive su…
Clinical History Method versus Corneal Tomographers in Estimating Corneal Power after Photorefractive Surgery Open
Aims: To investigate the concordance between the corneal power determined by various approaches with two tomographers (MS-39® and Galilei G6®) and the clinical history method (CHM) in patients undergoing photorefractive surgery with excime…
A Closed-Form Analytical Conversion between Zernike and Gatinel–Malet Basis Polynomials to Present Relevant Aberrations in Ophthalmology and Refractive Surgery Open
The Zernike representation of wavefronts interlinks low- and high-order aberrations, which may result in imprecise clinical estimates. Recently, the Gatinel–Malet wavefront representation has been introduced to resolve this problem by deri…
The Centration Dilemma in Refractive Corrections: Why Is It Still a Dilemma and How to Cope? Open
(1) Background: Defining the optimum center for laser refractive corrections is difficult, with many of the available approaches having pros and cons. Decentered ablations result in undesirable side effects like halos, glare, monocular dip…
Model of the Effects of Femtosecond Laser Pulse Energy on the Effective Z-Position of the Resulting Cut after Laser-Induced Optical Breakdown Open
Presented in this study is a validated semiempirical model of the effects of femtosecond laser pulse energy on the effective z-position of the resulting cut after laser-induced optical breakdown. Different energy levels (for the same spot …
Visual Acuity Improvement (Supernormal Vision) after SmartSight lenticule extraction procedures: A Machine Learning Assisted Approach. Open
Objectives To anticipate improvements in lenticule extraction, with the potential to enhance visual acuity, by employing SmartSight from SCHWIND eye-tech-solutions. This involves utilizing the advanced femtosecond laser system, SCHWIND ATO…
Simple Estimate of the Impact of M2 and Strehl Ratio on the Effective Focusable Spot Size Open
A simple method (first-order approximation) to determine the impact of M2 and the Strehl Ratio on the effective focusable spot size avoiding complex propagations of the beam wavefront is proposed. The model is based upon previous models an…
Optimization of the Spot Spacings for Reducing Roughness in Laser-Induced Optical Breakdown Processes for Corneal Laser Vision Correction Open
The aim of this work is to implement an algorithm that simulates a simplified cutting surface based on laser-induced optical breakdown (LIOB). The algorithm includes the definition of a possible positioning of the laser pulses and calculat…
Determination of Corneal Power After Refractive Surgery with Excimer Laser: A Concise Review Open
Refractive surgery with excimer laser has been a very common surgical procedure worldwide during the last decades. Currently, patients who underwent refractive surgery years ago are older, with a growing number of them now needing cataract…
Cross Sectional Analysis of Impact of Seasonal Changes on Excimer Laser Ablation Performance on Polymethyl Methacrylate (PMMA) Open
Seasonal changes and varying degree of corneal hydration has been linked to excimer laser corneal ablation rates. The use of PMMA as a calibration material in refractive lasers is well established. However, PMMA ablation may be equally aff…
Method to determine the centration of a lenticule of tissue extracted from a cornea Open
A simple and novel method to analyse the centration of a lenticule of tissue extracted from a cornea has been developed, in which the centre of “mass” of the individual differences between post and preoperative maps of several corneal metr…