Clinical Research Directory

Study to Evaluate the Safety and Effectiveness of the enVista® Beyond (EY) EDF Intraocular Lens in Subjects Undergoing Cataract Extraction

This research study is evaluating the safety and efficacy (performance) of the Bausch + Lomb enVista Beyond Hydrophobic Acrylic Extended Depth of Focus Intraocular Lens (IOL) in subjects who receive this IOL in both eyes.

Effect of Intraocular Lens (IOL) Centration and Tilt on Visual Performance With Clareon® Vivity® IOL Implantation

The goal of this observational study is to assess the effect of intraocular lens (IOL) movement in patients who have undergone Clareon® Vivity® IOL implantation. The main question it aims to answer is: Does an association exist between IOL movement and patient quality of vision? Participants implanted with Clareon® Vivity® and Vivity® Toric IOLs will be asked to do the following: * consent to participate in the study * allow researchers to access their personal medical records * undergo a series of tests to assess the position of their IOLs and quality of vision Researchers will assess participant examination results to determine whether an association exists between IOL movement and patient quality of vision.

Evaluation of Visual Outcomes, Complications, and Neuroadaptation Following Bilateral Implantation of enVista Envy Trifocal Intraocular Lenses

The enVista Envy intraocular lens (IOL) manufactured by Bausch + Lomb is a new multifocal intraocular lens based on diffractive optics. It was registered with the Polish Office for Registration of Medicinal Products, Medical Devices and Biocidal Products in September 2025. The lens also bears the CE mark, indicating that it is approved for marketing and use within the European Union. Its innovative design is based on a smooth, continuous transition between diffractive rings, allowing patients to achieve excellent visual quality at far, intermediate, and near distances while reducing the incidence and severity of unwanted photic phenomena such as glare and halos. Thanks to this technology, patients may achieve better uncorrected visual acuity, reduced dependence on spectacles, and faster neuroadaptation. The Second Department of Ophthalmology is the first center in Poland to be offered participation in a clinical study evaluating the safety and effectiveness of the enVista Envy IOL. The planned study will provide the first clinical experience with this lens in Poland and contribute to expanding knowledge regarding modern intraocular lens technologies. Twenty patients will be selected according to predefined inclusion and exclusion criteria. Preoperative assessment will include a comprehensive ophthalmic examination and IOL power calculation. Cataract surgery will be performed using bimanual MICS (Micro-Incision Cataract Surgery) phacoemulsification. Surgery in the fellow eye will be performed one month after the first procedure. Before surgery and during follow-up visits at 1, 3, and 6 months postoperatively, the following assessments will be performed: routine ophthalmic examination, intraocular pressure (IOP) measurement, visual evoked potentials (VEP), monocular and binocular uncorrected distance visual acuity (UDVA), distance best-corrected visual acuity (DBCVA) at 4 meters, intermediate visual acuity (66 cm) and near visual acuity (40 cm), both corrected and uncorrected, monocularly and binocularly (logMAR charts), binocular contrast sensitivity testing, and defocus curve assessment. Intraoperative and postoperative complications, quality of vision (using the standardized Quality of Vision Questionnaire \[QoV\] and the Near Activity Vision Questionnaire \[NAVQ\]), speed of neuroadaptation, spectacle independence, and the occurrence of photic phenomena such as glare and halos will also be analyzed.

Cataract Monitored Anesthesia Care (MAC) Feasibility Pilot Study

The goal of this pilot clinical trial comparing two different sedation approaches for cataract surgery is to assess the feasibility, completeness, and distribution of data in measuring patient satisfaction, the quality of recovery, and surgical outcomes for the purpose of planning a larger clinical trial. Participants will be asked to respond to several surveys throughout the study on their experience and to assess outcomes of interest.

A Study on the Application of Smart Bed-Exit Alert Assistive Devices for Detecting Preoperative Bed Exits in Ophthalmic Surgery Patients in the Operating Room

This prospective, randomized interventional study aims to evaluate the effectiveness of a smart bed-exit alert system for patients undergoing cataract surgery during the preoperative waiting period. Participants will be randomly assigned to either the smart bed-exit alert system group or the standard care group. The study will compare nurse bedside visit frequency and nursing care time during the preoperative waiting period to evaluate whether the smart bed-exit alert system improves patient safety and nursing care efficiency.

JASPER™ Robotic Surgical System (Formerly Known as the ORYOM™ Robotic Surgical System) in Cataract Surgery

This is a prospective, open-label clinical study designed to evaluate the performance and safety of the JASPER™ Robotic Surgical System during cataract surgery.

Clinical Evaluation of a Novel Trifocal IOL

The purpose of this study is to understand the visual outcomes of the investigational intraocular lens (IOL) Model LPYWT0 when compared to the commercially marketed Clareon PanOptix Pro IOL Model PXYWT0.

A Study of the Helix Surgical System in Primary Open-Angle Glaucoma (POAG) and Cataract (HELIX)

A study to assess the safety of the Helix Surgical System in cataract surgery and to gain early evidence of its effectiveness in lowering intraocular pressure (IOP) in subjects with mild to moderate primary open-angle glaucoma (POAG) and cataracts.

Prospective, Randomized, Parallel-group Comparison of Two Refractive EDOF Intraocular Lenses: Johnson & Johnson Tecnis PureSee Versus 1stQ Comfort Z-EDOF

This study compares two types of artificial lens (intraocular lens, or IOL) used during cataract surgery. Both are extended depth-of-focus (EDOF) lenses, designed to give clear vision across a range of distances - far and intermediate - so that people depend less on glasses after surgery. The two lenses, the Tecnis PureSee and the 1stQ Comfort Z-EDOF, use different optical designs, and it is not yet known whether one provides a wider range of clear vision than the other. Adults having cataract surgery in both eyes may take part. Each participant is randomly assigned to receive one of the two lens types, and the same lens type is implanted in both eyes. Neither the participant nor the staff measuring vision knows which lens was used until the main 6-month assessment is complete. After surgery, participants attend check-ups at 1, 3, and 6 months. The study measures how wide a range of distances each person can see clearly, along with vision at different distances, quality of vision, side effects such as glare or halos, and overall satisfaction. The results will help doctors and patients choose between these lens types.

Age-Related Eye Disease Study (AREDS) Follow-Up

This study is a 5-year extension of the AREDS protocol, in which investigators followed the natural course of age-related macular degeneration (AMD) and cataracts. Participants in the former AREDS protocol are eligible for this study. Participants have a complete eye examination once a year and are contacted at least once a year between visits to check on their status. The eye examination includes measurement of visual acuity (vision chart test) and examination of the inside of the eye after the pupils have been dilated with eye drops. Photographs of the inside of the eye may be taken using a special camera that flashes a bright light in the eye. A blood sample may be obtained to test for cholesterol level and genes related to inflammation.

Outcomes of High vs Physiological Intraocular Pressure During Cataract Surgery Using ACTIVE SENTRY

Cataract surgery is a widely performed procedure across the world that helps restore vision in many patients suffering from cataracts. Irrigation is an essential component of the surgery. Fluid is constantly circulated to help regulate temperature as heat is generated with ultrasound energy, to minimize tissue trauma, and to create an intraocular pressure (IOP) sufficient to keep the anterior chamber (AC) stable. In parallel, aspiration brings the components of the cataract closer to the surgical instrument. A balance between irrigation and aspiration during surgery is essential to maintain stability in the AC. However, an ideal flow rate, which influences IOP during surgery, is yet to be determined. Most recent studies with Centurion Active Sentry show that there is similar efficiency between higher and lower IOP settings. Traditionally, high-flow rates have been used in advanced cataracts and are believed to make space in the AC. However, they are known to create fluid turbulence and are associated with risks of tissue damage, including cell loss in one of the cornea's layers. High IOP during surgery has also been shown to cause damage to the optic nerve as well as to the retina. Distorting and stretching the AC during phacoemulsification have also been associated with increased pain experienced by the patient. Comfort can be achieved by lowering pressure levels. Low-flow rates have a better safety profile, reduce IOP and pressure fluctuations while offering equal efficiency, including comparable surgical time. Using central corneal thickness (CCT) as an indicator of corneal trauma, it has been shown that patients that have had surgery with low-flow rates present no change in the CCT postoperatively as opposed to patients in the high-flow rates. As less fluid turbulence is created with low-flow rates, there is decreased risk of fragment contact with the cornea's inner surface, thus reducing cell loss. Alcon Laboratories, Inc. developed Active Fluidics which allows to stabilize intraocular pressure and prevent IOP fluctuations as well as IOP surges during surgery. It is now further equipped with the Active Sentry handpiece which is integrated to the surgical instrument and acts as a sensor to pressure variation. It allows rapid feedback to maintain a stable AC. Our research project aims to assess the outcomes following phacoemulsification done with physiological IOP with the help of the Active Sentry handpiece compared to traditional high IOP levels.

Clinical Study to Confirm the Safety and Performance of the Virtuoso Phaco-vitrectomy Device

This is a pre-market clinical investigation with a device that does not bear the CE-marking. Aim of the study is to confirm the safety and performance of the device and collect user feedback.

Small RNA tRF-31 Changes in Patients With Age-Related Cataract

The goal of this observational study is to evaluate the expression characteristics and clinical relevance of the tRF-31/HIPK2 signaling axis in adults over 18 years old with age-related cataract (ARC). The main questions it aims to answer are: Is there a correlation between the relative expression levels of tRF-31 and its target gene HIPK2 in the anterior lens capsule and the clinical severity (Emery-Little grading system) of age-related cataracts? Does oxidative stress in the anterior segment microenvironment have a potential bystander effect on the state of the corneal endothelium? Participants will:Undergo routine preoperative ophthalmologic examinations, including visual acuity tests, slit-lamp photography, and corneal endothelial cell counting. Undergo standard cataract surgery (phacoemulsification combined with intraocular lens implantation) as part of their regular medical care. Allow researchers to collect and analyze their anterior lens capsule tissue, which is routinely removed and typically discarded as medical waste during the standard continuous curvilinear capsulorhexis (CCC) step of the surgery.

Effects of Oxygen Cage Support During Cataract Surgery

Cataract is an ocular disorder resulting from lens opacity; it stands as the most common cause of preventable blindness worldwide and significantly impairs the quality of life in elderly individuals. Surgical treatment utilizing small-incision phacoemulsification is the most effective solution for cataracts. Cataract surgery is generally performed under local anesthesia, which requires patients to remain awake throughout the operation, thereby potentially increasing their anxiety experiences. Elevated anxiety not only reduces patient comfort but can also lead to alterations in physiological parameters and a prolongation of the operation time. Furthermore, it is observed that the surgical drapes used to maintain the sterility of the surgical field during the operation cause discomfort to the patient. The weight and positioning of these drapes can cover the patient's mouth and nose area during the ongoing surgery, creating a sensation of difficulty in breathing (dyspnea). In addition to these circumstances, standard oxygen support is provided to the patient during cataract surgery performed under local anesthesia. This support is administered nasally via an open-ended oxygen tubing from beneath the surgical drape, aiming to ease the patient's respiration. However, when the oxygen flow rate is increased based on the patient's needs, high-velocity and high-concentration oxygen administration is observed to cause mucosal dryness, which shortly triggers reflex-induced irritative coughing attacks. For these reasons, it is crucial to keep anxiety under control, provide oxygen to prevent hypoxia, and monitor physiological parameters during cataract surgery.

Evaluation of Head-Mounted Spatial Computing and Three-Dimensional (3D) Visualization in Ocular Microsurgery: A Safety and Workflow Study

The purpose of this research is to evaluate the use of the research study device, the Apple Vision Pro head-mounted spatial computing display, with the Zeiss Artevo 850 digital microscope system, for the visualization during cataract and anterior segment surgery. Specifically, researchers will assess how the study device affects surgical staff experience and workflow and monitor for patient safety and intraoperative complications associated with the use of the device.

Occyo Tele-ophthalmology Study

The prospective, (observer) blinded clinical trial at the University Hospital for Ophthalmology includes patients routinely scheduled for cataract surgery at the Medical University of Innsbruck. Patients are enrolled one week prior to their planned cataract surgery. The participants will undergo a screening in which, in addition to the ophthalmological standard examinations, Occyo One images of the anterior segment of the eye are taken. After surgery, a post-operative follow-up visit takes place and a second set of Occyo One images will be generated. During the postoperative check-up, the study team at the trial center decides-based on defined criteria (medical history, slit lamp examination results)-whether a change in the subsequent patient management is necessary due to the presence of postoperative complications (unexpected management changes = UMC). Up on completion of all patient visits/study-specific measurements and data collection, information regarding diagnostic criteria and the Occyo One images are sent to an external, blinded ophthalmologist for telemedical assessment. Based on the available information and images, the blinded ophthalmologist decides whether a change in patient management should have been made or not. The difference in the detection of an event resulting in a UMC is the primary objective of this clinical investigation.

Clareon TruPlus vs Tecnis Eyhance IOLs in Cataract Patients

This study is a prospective, randomized, two-arm, single-center, single-surgeon, double-masked (subject and assessor) comparative study. It involves bilateral implantation of intraocular lenses (IOLs), comparing Clareon TruPlus IOL and Tecnis Eyhance IOLs in normal cataract patients. The study will be conducted at one site and will include a pre-operative visit and a 3-month post-operative assessment.

Effect of Dry Eye Treatment on Corneal Astigmatism Measurements

This prospective single-center study evaluates the effect of dry eye disease and short-term ocular surface treatment on the agreement and repeatability of corneal astigmatism measurements in patients with age-related cataract. Participants undergoing preoperative cataract evaluation are classified into a control group or a dry eye disease group according to ocular surface symptoms and objective tear film findings. All participants undergo ocular surface assessment and repeated corneal measurements using three commonly used devices: IOLMaster 700, Pentacam AXL, and iTrace Prime. Measurements include keratometric corneal astigmatism, total corneal astigmatism, and vector components of astigmatism. Patients with dry eye disease receive 0.3% sodium hyaluronate eye drops four times daily for 2 weeks, after which ocular surface assessment and device measurements are repeated. The primary objective is to determine whether dry eye disease reduces interdevice agreement and test-retest repeatability of corneal astigmatism measurements, and whether short-term ocular surface treatment improves measurement stability. Interdevice agreement is assessed using Bland-Altman analysis, and repeatability is evaluated using within-subject standard deviation, test-retest repeatability, and intraclass correlation coefficient.

Visual and Patient Reported Outcomes With Clareon TruPlus

This is a prospective, single-site, two-surgeon, single-arm, observational study evaluating the Clareon TruPlus IOL. Subjects will be assessed up to 3 months post-operatively. Clinical evaluations will include refractive outcomes, visual acuity, and administration of the IOLSAT Questionnaire.

Post-refractive IOL Outcomes With Clareon TruPlus

This is a prospective, single-arm, single-center, single-surgeon study evaluating the Clareon TruPlus IOL in post-refractive cataract patients. Subjects will be assessed up to 3 months post-operatively. Clinical evaluations will include refractive outcomes, visual acuity, and administration of the PRISQ Questionnaire.

Development of a Mobile Terminal-Based Intelligent Detection System for Multiple Anterior Segment Diseases of the Eye

This is a multi-center, cross-sectional study evaluating a smartphone-based artificial intelligence (AI) system for anterior segment eye disease screening. The system is designed to identify 16 clinically important anterior segment conditions from images captured using a standard Android smartphone. A core design feature of the system is that all image analysis is performed entirely on the smartphone itself, without requiring internet connectivity or cloud-based server infrastructure. The study is motivated by a structural challenge in the deployment of medical AI: systems that depend on cloud infrastructure for inference are non-functional in settings without reliable internet access, which disproportionately excludes populations in low-resource regions where the burden of preventable eye disease is highest. This study evaluates whether an on-device AI system, designed with operational constraints as a primary engineering objective, can deliver clinically acceptable diagnostic performance while remaining operable under real-world connectivity limitations. The study comprises five evaluation components. First, the diagnostic performance of the AI system is benchmarked against board-certified ophthalmologists of varying seniority on a standardized set of smartphone-captured anterior segment images. Second, the usability of the system is evaluated among non-medical users who perform self-administered screening with minimal instruction, with per-screening time recorded across consecutive attempts to characterize the learning curve. Third, a head-to-head field trial directly compares the on-device AI system against a functionally equivalent cloud-based deployment of the same model architecture across key operational dimensions including screening duration, diagnostic performance, and user acceptability. Fourth, population-level screening is conducted among consecutively enrolled community residents at two low-resource sites, with per-disease sensitivity and specificity calculated against reference-standard slit-lamp examinations. Fifth, pre-specified health-economic and environmental analyses compare the two deployment modalities in terms of per-person screening cost, cost-effectiveness, per-inference electricity consumption, and projected carbon emissions at scale. The reference standard for all diagnostic comparisons is slit-lamp biomicroscopic examination performed by board-certified ophthalmologists. The study is designed and reported in accordance with the DECIDE-AI reporting guideline for early-stage clinical evaluation of AI-driven decision-support systems.

Measurement of Ocular Tensional Fluctuation by Triggerfish Lens Before and After Cataract Surgery in Patients With Exfoliative Glaucoma

Glaucoma is a very frequent disease in Brittany. In glaucoma the retinal ganglion cells and their axons slowly die with visible changes at the optic nerve head (cupping). Without early diagnosis and effective treatment or with delayed treatment decrease of visual acuity or blindness become. In secondary pseudoexfoliation glaucoma grayish-white deposits of abnormal proteins are found on all surfaces of eye irrigated by the aqueous humor. The deposits of PEX material inside the trabecular meshwork decrease aqueous humour outflow and the intraocular pression raise. The exfoliation material is found on the surface of the lens capsule with frequent developement of nuclear cataract . After cataract surgery the intra ocular pressure (IOP) decrease. Some recent study have found decreasing ocular volume variation associated to IOP fluctuation in night after cataract surgery in normal pressure glaucoma patients. In our study we want see if it's the same thing in pseudoexfoliation glaucoma patients.

Community-Based Eye Screening With Structured Referral Tracking for Preventing Avoidable Blindness in Adults in Rawalpindi, Pakistan

This cluster randomized controlled trial aims to evaluate the effectiveness of a Structured Referral Tracking (SRT) intervention in improving referral completion among adults identified with avoidable blindness during community-based eye screening camps in Rawalpindi District, Pakistan. Ten community clusters will be randomized into intervention and control groups. Participants in the intervention group will receive structured referral counseling, weekly reminder calls or messages, and customized referral guidance for eight weeks, while the control group will receive standard referral procedures. The primary outcome is referral completion at a tertiary eye hospital within eight weeks after screening. Secondary outcomes include knowledge regarding avoidable blindness, treatment satisfaction, feasibility, acceptability, and barriers influencing referral completion.

A Study to Evaluate Real World Outcomes of the enVista® Aspire (EA) and Aspire Toric (ETA) Intraocular Lens in Subjects Undergoing Cataract Extraction

A study to evaluate the real-world clinical performance of the enVista Aspire and Aspire Toric intraocular lens (IOL) models EA and ETA and to assess surgeon and subject satisfaction