Clinical Research Directory

Patient Reported Outcomes With WaveLight Plus LASIK

This study is a single-site, single-arm, prospective, observational study of subject satisfaction, quality of vision, and quality of life after bilateral LASIK surgery. Subjects will be assessed up to 3 months post-operatively. Clinical evaluations will include refractive outcomes, visual acuity, and administration of the adapted PROWL and the Quality-of-Life Impact of Refractive Correction (QIRC) Questionnaire.

Evaluation of Daily Disposable Toric Soft Lenses Manufactured With an Alternative Hydration Process

This is a prospective, multi-site, dispensing, randomized, controlled, double-masked, bilateral wear, 2x2 crossover study to evaluate the safety and effectiveness of the test lens.

Evaluation of Delefilcon A and Senofilcon A Daily Disposable Toric Soft Contact Lenses Over One Week of Wear

This is a prospective, multi-site, 4-visit, bilateral, dispensing, randomized, controlled, double-masked, 2x2 crossover study to evaluate subjective comfort, overall opinion and end of day comfort following wear of two different contact lenses.

Wear Experience With Daily Disposable Contact Lenses for Astigmatism Over a Long-Wear Day

The purpose of this study to assess the wear experience of people who have astigmatism when wearing a daily disposable contact lens for astigmatism over long days of wear.

Evaluation of Two Monthly Silicone Hydrogel Multifocal Toric in Soft Contact Lens Wearers

To compare the performance of two leading soft multifocal Toric contact lenses.

1-Week Dispensing Evaluation of Kalifilcon A Toric Contact Lenses Compared to Ultra for Astigmatism

This single-site, randomized, double-masked (participant and investigator), 2-way crossover, repeated-measures dispensing study evaluated the visual performance of kalifilcon A daily disposable toric (LD213001) contact lenses compared with commercially available Ultra for Astigmatism (samfilcon A) contact lenses in experienced soft contact lens wearers requiring astigmatic correction. Each participant wore both lens types as daily disposable lenses for approximately one week each, in a randomized order.

Effect of a Myopia Control Lens on the Astigmatism in Children

The goal of this clinical trial is to investigate over a one-year period the effect of myopia control spectacle lenses on astigmatism in children aged 6 to 13 years with myopia and astigmatism. The main question it aims to answer is: \- How does the eye respond at each timepoint to the myopia control lenses? By evaluating: the change in astigmatism (cylinder) after one year? Participants will: Wear the assigned study spectacles daily Visit the Essilor R\&D Centre for scheduled follow-up sessions

Comfort and Vision With TOTAL30 Multifocal Lenses

This study is a single-arm, prospective, observational study conducted at one site to evaluate the comfort and vision of the TOTAL30 Multifocal (T30MF) contact lenses over the course of long wear days. The study will assess the proportion of positive subjective Visual Analog Scale (VAS) assessments of comfort and vision at 10, 12, 14, and 16 hours of wear on Days 1, 7, 14, and 30. Additionally, the study will explore subjective assessments of lens comfort using the CLDEQ-8 survey and measure logMAR visual acuity at both distance and near at Visit 1, Visit 2, and after 1 month of lens wear. Participants will undergo three site visits, with at-home surveys conducted at specified intervals to gather real-time data on comfort and vision.

Post Market Clinical Follow-up (PMCF) Study of Clareon Vivity & Clareon PanOptix

The purpose of this Post-Market Clinical Follow-up study is to describe the long-term safety and performance of the Clareon Vivity and Vivity Toric and Clareon PanOptix and PanOptix Toric IOLs.

Rotational Stability of Two Soft Toric Contact Lens Designs

This study compared the rotational behavior of two commercially available soft toric contact lenses with different stabilization designs and explored whether ocular biometric and refractive characteristics were associated with lens rotation. Contact lens-naïve adults underwent baseline ocular biometry and were scheduled for two separate lens-fitting sessions in randomized order. Lens rotation was measured 30 minutes after insertion in primary, right, left, upward, and downward gaze using slit-lamp biomicroscopy. The study was designed as a two-period crossover comparison.

Evaluation of Mesopic Visual Acuity and Patient Satisfaction Following Ray-Tracing-Guided LASIK

To provide comprehensive evaluation of WaveLight® Plus technology by assessing impact on both functional low-light vision and patient reported outcomes

Study of a Phakic Implantable Collamer Lens (ICL)

A prospective, open-labeled, single-site study of a phakic implantable collamer lens (ICL) for the correction/reduction of myopia with or without astigmatism.

SMILE Surgery in One Eye Compared to Ray Tracing-guided LASIK Surgery in the Fellow Eye

Participants will undergo LASIK surgery in one eye using ray tracing guided technology in one eye and LASIK surgery in the other eye using wavefront guided technology. We are comparing outcomes between the two technologies as measured by self reported quality of vision and quality of life outcomes using validated questionnaires before and after surgery. We will also be comparing outcomes between the two technologies including measurement of low contrast visual acuity,and best spectacle corrected visual acuity.

1-Week Dispensing Evaluation of REVIVE™ Toric Soft Contact Lenses

Experienced soft contact lens wearing subjects were enrolled in this 1-week, post-market, bilateral, repeated measures, dispensing study. All subjects were seen for a Screening/Dispensing Visit at which informed consent was obtained and eligibility was assessed. If subjects satisfied all eligibility criteria and none of the exclusion criteria, subjects were fit and dispensed study lenses. If unsuccessful in the dispensed lenses, additional lenses were trialed. Once vision and lens fit were determined to be acceptable, eligible subjects wore study lenses in both eyes for at least 8 hours per day (with the exception of the follow-up visits where the lenses were worn for a minimum of 2 hours), for approximately 1 week (7 days +/-3 days). Measurements were taken at the insertion visit and at the 7-day follow-up visit.

Accuracy of Corneal Astigmatism in Different Region Modes

To analyze the difference between measured total corneal astigmatism and actual corneal astigmatism under different region modes and optimize the region setting.

Corneal Biomechanics and Surgically Induced Astigmatism in Pseudoexfoliation Syndrome

This prospective study aims to evaluate the influence of corneal biomechanical properties on surgically induced astigmatism following standard phacoemulsification cataract surgery in patients with pseudoexfoliation syndrome compared with patients without pseudoexfoliation. Corneal hysteresis (CH), corneal resistance factor (CRF) and corneal astigmatism will be measured before surgery and at postoperative follow-up visits. The relationship between changes in corneal biomechanics and surgically induced astigmatism will be analyzed.

Preoperative and Postoperative Refractive and Topographic Evaluation in Patients With Primary Pterygium: Comparison of Two Surgical Techniques

This study evaluated changes in refractive status and corneal topography before and after surgical treatment of primary pterygium. Patients undergoing pterygium excision were treated with either conjunctival autograft or amniotic membrane transplantation. Visual acuity, refractive error, and corneal topographic parameters were assessed before surgery and after postoperative follow-up to compare the effectiveness of both surgical techniques in restoring corneal optics and improving visual outcomes.

Evaluation of Orthokeratology Lenses With a 5MM Optic Zone Diameter

To evaluate the clinical performance and user-reported experience of Paragon CRT contact lenses with a 5mm Optic Zone Diameter (OZD)

Optical Quality of the Cornea in Orthokeratology

Analyzing Optical Quality After the Use of Overnight Orthokeratology (Ortho-K)

KLEx Versus FS-LASIK for the Treatment of Myopia and Compound Myopic Astigmatism

FemtoLASIK is a type of laser eye surgery used to correct vision problems such as nearsightedness, farsightedness, and astigmatism. It involves two main steps: creating a flap and reshaping the cornea. Refractive lenticule extraction, (KLEx) is another laser eye surgery method to correct vision issues, which involves creating and extracting a lenticule without the need of a flap. The investigators will evaluate and compare the efficacy and safety of these two procedures.

Clareon TruPlus Study

The purpose of this research study is to generate safety and performance data for Clareon TruPlus Monofocal Intraocular Lenses (IOLs). IOLs are medical devices that are implanted in the eye during cataract surgery to restore clear vision after the cloudy natural lens has been removed. IOLs are intended to remain in the eyes for the duration of the patient's lifetime.

Investigation of the Safety and Effectiveness of Monofocal Toric Intraocular Lens (IOL)

This study is a prospective, multicenter, randomized, double masked trial comparing an investigational Monofocal Toric intraocular lens (IOL) (PODEYE TORIC CYL 1.5 D) and a commercially available non-toric monofocal IOL.

Improving Visual Quality in Patients With Irregular Corneas Using Asymmetrical Toric Intraocular Lenses

Cataract surgery in patients with irregular corneas presents unique challenges, primarily due to the high variability in keratometry and corneal tomography measurements, which complicates accurate intraocular lens (IOL) calculations. In these patients, therapeutic options are currently limited to either non-toric IOLs and rigid contact lenses postoperatively or conventional toric IOLs for the reduction of total astigmatism within cataract surgery. While conventional toric IOLs may be beneficial in selected cases with a stable astigmatic pattern and clear axis, their effectiveness is largely limited, as significant irregularity and higher order aberrations reduce predictability, accuracy of formulae, and refractive outcomes. Therefore, the development of a reliable method to reduce total astigmatism - including irregular components - would represent a major advancement, potentially improving both visual function and patient quality of life. The aim of this exploratory study is to evaluate the effectiveness of customized toric intraocular lenses (AMILens Individual, AMIPLANT GmbH, Germany) in reducing total corneal astigmatism in patients with a significant irregular astigmatic component. These lenses are designed to address corneal aberrations up to the 6th Zernike order, thereby extending correction beyond the capabilities of conventional toric IOLs. To our knowledge, no clinical study has yet investigated this novel approach.

Wavefront-guided LASIK Surgery Compared to Ray Tracing-Guided LASIK Surgery

We are enrolling participants aged 22 and older to have LASIK surgery in both eyes. We will perform wavefront-guided LASIK in one eye and ray tracing-guided LASIK in the fellow eye of each participant. We are trying to see if there are any differences in the efficacy between the two types of LASIK procedures.