Corneal Curvature of the Saudi Population in Relation to Age, Gender, Refractive Errors, and Central Corneal Thickness.

Corneal curvature (CC) is a crucial ocular optical system parameter, indicating the shape of the cornea expressed in radii. This study aims to investigate the relationship between CC, age, gender, refractive errors, and central corneal thickness (CCT) in Saudi Arabia, a field lacking in research. Data were gathered from Imam Medical Center in Riyadh and Dr.

[Comparison of visual outcomes between corneal topography-guided FS-LASIK and SMILE for myopia and myopic astigmatism: a network meta-analysis].

To compare the postoperative visual outcomes of corneal topography-guided femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) and small incision lenticule extraction (SMILE) for myopia and myopic astigmatism. Embase and PubMed were searched for randomized controlled trials (RCTs), prospective comparative studies, observational studies and retrospective studies of patients with myopia and/or myopic astigmatism treated by corneal topography-guided FS-LASIK, the other FS-LASIKs or SMILE (inception to November 2023). The studies meeting the criteria were collected and underwent quality assessment according to the Jadad scale for RCTs and the Newcastle-Ottawa scale for non-randomized studies.

Comparison of corneal consumption in correcting high with-the-rule astigmatism between refractive lenticule extraction and laser-assisted in situ keratomileusis.

Purpose: To compare corneal thickness (CT) and corneal volume (CV) consumption after the refractive lenticule extraction and the femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) in myopic eyes with high with-the-rule (WTR) astigmatism.

Methods: 70 myopic eyes (50 patients) with high WTR astigmatism (-2.00 to -3.

Higher-Order Aberrations Following Ray Trace LASIK and the Impact of Eye Movement on Coma.

Purpose: To assess ocular higher-order aberrations (HOAs) following ray trace guided laser in situ keratomileusis (LASIK).

Methods: Retrospective review at a single-site ophthalmology practice. Two hundred and fifty eyes of 250 patients with myopia and astigmatism undergoing ray trace LASIK were randomly reviewed (Wavelight Plus, Alcon).

A Comparative and Prospective Study of Corneal Consumption and Corneal Biomechanics After SMILE and FS-LASIK Performed on the Contralateral Eyes With High Myopic Astigmatism.

Purpose: The purpose of this study was to compare the actual corneal consumption and subsequent corneal biomechanical changes after small incision lenticule extraction (SMILE) and femtosecond laser-assisted in situ keratomileusis (FS-LASIK) in eyes with high myopic astigmatism.

Methods: In this prospective, randomized study on high myopic astigmatic eyes, 74 patients with similar refractive error received SMILE in one eye and FS-LASIK in the contralateral eye were enrolled. The central stromal reduction was calculated by preoperative and postoperative central stromal thickness (CST) measurements by the RTVue optical coherence tomography (OCT).

[Functional outcomes and corneal condition in cavitation complications of femtosecond LASIK].

Unlabelled: The use of femtosecond (FS) laser in LASIK procedures for myopia correction can lead to the formation of an opaque bubble layer (OBL) in stromal layers of different densities and in various areas of the cornea.

Purpose: This study evaluated the functional outcomes and the condition of the cornea in eyes with and without OBL in randomized groups.

Material And Methods: The study included 93 patients (186 eyes) with varying degrees of myopia (from 2.

Ray-tracing-Guided or Q-Value-Adjusted FS-LASIK for Correction of Myopia and Myopic Astigmatism: A Comparative Contralateral Eye Study.

Purpose: To compare the safety and efficacy of individualized ray-tracing-guided femtosecond laser-assisted in situ keratomileusis (FS-LASIK) for correction of myopia and myopic astigmatism.

Methods: This prospective, randomized, double-blind, contralateral eye study included 68 eyes of 34 patients with myopia or myopic astigmatism requiring FS-LASIK treatment. For each patient, one eye was randomly assigned to receive the ray-tracing-guided treatment, whereas the contralateral eye underwent Q-value-adjusted ablation.

Visual Quality Following Femtosecond Laser-Assisted In Situ Keratomileusis With Q-Value-Guided Optimized Monovision in Patients With Myopia and Presbyopia.

Purpose: To evaluate the objective and subjective visual quality 3 months after femtosecond laser-assisted in situ keratomileusis (FS-LASIK) performed with Q-value-guided optimized monovision scheme (Custom-Q) for correction of myopia with or without astigmatism and compensate for age-related accommodation deficiency.

Design: Prospective before-and-after study.

Methods: Patients who had Custom-Q FS-LASIK for myopia with age-related accommodation deficiency were included in this prospective study.

Impact of Scleral Lenses on Visual Acuity and Ocular Aberrations in Corneal Ectasia: A Comprehensive Review.

Corneal ectasias, including keratoconus (KC), pellucid marginal degeneration (PMD), and post-LASIK ectasia, poses significant visual rehabilitation challenges due to the resultant irregular astigmatism, myopia, and higher-order aberrations (HOAs). These conditions often resist traditional corrective methods, necessitating advanced optical solutions. Scleral lenses (SLs) have emerged as a primary non-surgical option for managing these complex corneal irregularities.

A Novel Procedure for Treating Radial Keratotomy (RK) Induced Corneal Irregularity Utilizing Treatment of Epithelial Compensation of Higher-Order Aberrations and Topographic Guided Ablation-The CREATE Protocol.

Purpose: To present the outcomes of a retrospective study of treatment of radial keratotomy-induced corneal irregularity with topographic guided ablation and a trans-epithelial approach based on epithelial compensation.

Methods: Sixty eyes of 31 patients were treated for radial keratotomy-induced corneal irregularity utilizing a customized trans-epithelial topographic guided ablation photorefractive keratectomy (PRK) for treatment of corneal higher-order aberrations and lower-order astigmatism. Three-month results were analyzed via measurement of vision, refraction, residual higher-order aberrations (HOAs), residual lower-order and higher-order aberrations, as well as for loss or gains of lines of best corrected visual acuity.

Assessing the predictability of five intraocular lens calculation methods in eyes with prior myopic keratorefractive lenticule extraction.

Purpose: To evaluate and compare the predictability of five methods of intraocular lens (IOL) calculation in eyes with prior keratorefractive lenticule extraction (KLEx) for the treatment of myopia.

Methods: A retrospective case study included 100 eyes of 52 patients who underwent myopia and myopia with astigmatism treatment with small incision lenticule extraction (SMILE). Preoperative and 3-month postoperative measurements of optical biometry and corneal tomography were obtained.

Corneal Epithelial Remodeling Following Cylinder Correction With SMILE or FS-LASIK: A Contralateral Comparative Study.

Purpose: To compare the corneal epithelial remodeling in eyes with high astigmatism that had small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK).

Methods: Seventy-four patients with myopic astigmatism of greater than -2.00 diopters (D) and little binocular difference in spherical equivalent were included in this contralateral comparative study.

Seven-year refractive outcomes comparing small incision lenticule extraction and femtosecond laser-assisted in situ keratomileusis for myopia and myopic astigmatism.

This study aimed to compare the seven-year refractive outcomes of small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) for correction of myopia and myopic astigmatism. This retrospective cohort study included 97 eyes of 53 patients who had undergone SMILE or FS-LASIK for myopia seven years prior. Measured parameters included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and manifest refraction.

Corneal Epithelial Hyperplasia Related to Chronic Eye Rubbing Mimicking Keratoconus.

We report a case of corneal epithelial hyperplasia associated with chronic eye rubbing mimicking keratoconus. A 32-year-old man was presented with a 3-year history of suboptimal vision and astigmatism in his left eye. His history was significant for chronic left eye rubbing.

Optimizing IOL Calculators with Deep Learning Prediction of Total Corneal Astigmatism.

: This study aims to identify the most accurate regression model for predicting total corneal astigmatism (TCA) from anterior corneal astigmatism (ACA) and to fine-tune the best model's architecture to further optimize predictive accuracy. : A retrospective review of 19,468 eyes screened for refractive surgery was conducted using electronic medical records. Corneal topography data were acquired using the Pentacam HR.

Factors predicting slow visual recovery following microkeratome-assisted myopic LASIK.

Purpose: To identify factors predicting slow visual recovery following myopic microkeratome assisted in situ keratomileusis (LASIK).

Design: Retrospective study.

Methods: This study included consecutive patients who underwent microkeratome-assisted myopic LASIK between January 2005 and December 2019 at Care Vision Laser Center, Tel Aviv, Israel.

Corneal higher-order aberrations in different types of irregular cornea.

Objetive: To assess differences in corneal higher-order aberrations (i.e., HOAs) between six different types of irregular corneas (i.

12-Month Visual and Refractive Outcomes of Topography-guided Femtosecond Laser-Assisted LASIK for Myopia and Myopic Astigmatism.

Purpose: To report 12-month visual and refractive outcomes following topography-guided femtosecond laser-assisted laser in situ keratomileusis (LASIK) for myopia and compound myopic astigmatism correction.

Methods: This prospective, single-center observational study was conducted in an outpatient clinical practice at the Stanford University Byers Eye Institute in Palo Alto, California. Uncorrected (UDVA) and corrected (CDVA) distance visual acuity, 5% and 25% contrast sensitivity CDVA, and manifest refraction following topography-guided femtosecond laser-assisted LASIK were assessed.

Comparison of visual quality after wavefront-guided LASIK in patients with different levels of preoperative total ocular higher-order aberrations: a retrospective study.

Purpose: To compare the visual quality after wavefront-guided femtosecond LASIK (WFG FS-LASIK) in patients with different levels of preoperative total ocular higher-order aberrations to guide clinical decision-making regarding patient selection and treatment strategies.

Methods: This study included 112 right eyes of 112 patients who previously underwent WFG FS-LASIK for correcting myopia and myopic astigmatism. The patients were divided into two groups based on the mean values of preoperative total ocular HOAs (0.

Safety and Effectiveness of Laser in Situ Keratomileusis Using the Teneo 317 Model 2 for Correcting Myopia and Myopic Astigmatism: Results of the U.S. FDA Clinical Trial.

Purpose: To evaluate the safety and effectiveness of a new aspheric ablation profile for correcting myopia and myopic astigmatism.

Methods: This prospective, multicenter study included patients who underwent laser in situ keratomileusis (LASIK) using a new aspheric ablation profile of the Technolas Teneo 317 (Model 2) excimer laser (version 1.28 US SW) by Technolas Perfect Vision, Bausch+Lomb, Inc.