Evaluation of the safety and efficacy of the new Enova® preloaded monofocal intraocular lens and cartridge injector system in cataract surgery
In this prospective and single-center clinical study, the safety and efficacy of the Enova PGF3 intraocular lens (IOL) and cartridge injector system will be evaluated. The Enova PGF3 cartridge injector system is designed to be used in cataract surgeries. Cataract patients aged 40 years and older, both male and female, without any serious ocular disease other than cataracts, will undergo IOL implantation following cataract surgery. It is planned to perform a total of 200 implantations with either unilateral or bilateral implantation of the participants' eyes. Postoperative visual acuity, refraction, patient satisfaction, and adverse events will be monitored during follow-up visits at day 1, week 1, and month 1. The primary objectives of the study are to achieve an uncorrected distance visual acuity of 20/20 or better, and to maintain an error and complication rate related to the preloaded system below 7.5%. Secondary objectives include evaluating patient satisfaction and assessing whether surgeons find the preloaded system easy to use and if it meets their expectations. The primary endpoints are refractive stability within ±0.50 D, uncorrected distance visual acuity of 20/20 or better, and a general clinical performance rating of the preloaded system with a score of 95% or higher. Secondary endpoints include the duration of surgery, accuracy of lens positioning, surgical complications, surgeon-reported ease of use, and patient satisfaction survey results meeting expectations. As a safety parameter, adverse events reported in postoperative surgical reports will be evaluated.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
200
This intervention uses a preloaded IOL delivery system, which allows for a single-use, sterile implantation during standard phacoemulsification cataract surgery. Unlike standard manually loaded IOLs, this system reduces preparation time and minimizes handling of the lens, potentially improving surgical efficiency and maintaining lens sterility.
Istanbul University Istanbul Medical Faculty Ophthalmology Department
Istanbul, Fatih, Turkey (Türkiye)
Uncorrected Distance Visual Acuity (UDVA) - Photopic Conditions
Proportion of eyes achieving 20/20 or better uncorrected distance visual acuity under photopic conditions.
Time frame: 1 month postoperatively
Subjective Refractive Error
Eyes with a postoperative refractive error within ±0.50 diopters of the intended target.
Time frame: 1 month postoperatively
Overall Clinical Performance of the Preloaded IOL System
Surgeon-rated assessment of the general clinical performance of the preloaded system by The ENOVA PGF3 Questionnaire. This questionnaire is a 14-item, study-specific, non-validated survey developed to evaluate surgeons' experience with an intraocular lens (IOL) preloaded delivery system. Eleven items are rated on a 5-point Likert scale with the following scoring structure: 1. = Low 2. = Below Expectation 3. = Meets Expectation 4. = Above Expectation 5. = Outstanding Performance Some additional items are Yes/No questions and do not contribute to the numerical total score. The total numerical score is calculated by summing the 11 Likert-scaled items. Total score range: 11 to 55, with higher scores indicating better performance and more favorable user experience.
Time frame: 1 month after surgery
Preloaded System Evaluation Patient Questionnaire
Patient-reported outcomes assessing whether expectations for visual improvement and overall satisfaction were met.The questionnaire consists of 14 items assessing a patient's self-reported difficulty in performing vision-related daily activities. Each activity is rated using a 0-4 scale, where: 4 = No difficulty 3 = Mild difficulty 2 = Moderate difficulty 1 = Severe difficulty 0 = Unable to perform the activity The total score is calculated by summing responses across all 14 items. Total possible score range: 0 to 56 Higher scores indicate better visual function and less activity limitation. Lower scores indicate worse visual function.
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Time frame: Baseline (preoperative) and 1 month postoperatively
Surgical Procedure Assessment
Surgeon-reported ease of lens implantation and accuracy of lens placement, evaluating whether expectations for procedural handling were met.The surgeon notes, during the operative visit, the location of the incision, the size of the incision, whether the implantation system is compatible with the wound site, how many seconds the implantation time is shortened, and whether there were any issues with the unfolding of the intraocular lens or its placement into the capsular bag.
Time frame: Intraoperative