EDF IOL Versus Monofocal IOL

Launched by CARL ZEISS MEDITEC AG · Jul 21, 2025

Keywords

ClinConnect Summary

This clinical trial is comparing two types of lenses used in cataract surgery: the EDF intraocular lens (IOL) and the standard monofocal IOL. Cataracts cause clouding of the eye’s natural lens, leading to blurry vision, and surgery replaces this cloudy lens with a clear artificial one. This study aims to see how well each type of lens works for people with age-related cataracts.

Adults aged 18 and older who have cataracts in both eyes and are planning to have cataract surgery may be eligible to join, as long as their eye condition meets certain requirements, like having mild or no astigmatism (a common vision issue) and no other serious eye or health problems that could affect the surgery or results. Participants will need to agree to follow study visits and procedures. The trial has not started recruiting yet, but if you join, you can expect to receive one of the two types of lenses during your cataract surgery, and the doctors will monitor your vision and recovery to compare how well each lens helps improve sight.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 1. Patients of any gender, aged 18 years or older
• • 2. Patient with clinically significant bilateral age-related cataracts planned for phacoemulsification cataract extraction and eligible for implantation of a posterior chamber intraocular lens as determined by investigator's medical judgement
• • 3. Preoperative keratometric (corneal) astigmatism of 1.00 D or less (≤1.00 D)
• • 4. Calculated lens power within the available range
• • 5. Clear intraocular media other than cataract
• • 6. Patient is willing and capable of providing informed consent
• • 7. Patient is willing and capable of complying with visits and procedures as defined by this protocol
• Exclusion Criteria:
• • 1. Preoperative corrected distance visual acuity (CDVA) better than 0.3 logMAR (0.5 decimal)
• • 2. Endothelial cell count of less than 2000/mm2
• • 3. Acute, chronic, or uncontrolled systemic disease that could increase the operative risk or confound the outcome including but not limited to poorly controlled diabetes mellitus, active cancer treatment, mental illness, dementia, immunocompromised, connective tissue disease, clinically significant atopic disease, etc.
• • 4. Ocular condition that may predispose patient to future complications, per investigator's medical judgement, including but not limited to severe dry eye, anterior segment pathology, uncontrolled glaucoma, that would result in a visual acuity of 0.2 logMAR or worse during the study
• • 5. Clinically significant corneal abnormalities, including corneal dystrophy (epithelial, stromal or endothelial dystrophy), irregularity or oedema as per Investigator's medical judgement; conditions including but not limited to kerato-uveitis, keratopathy, keratectasia
• • 6. Previous intraocular or corneal/refractive surgery that might confound the outcome of the investigation or increase the risk to the patient (including corneal transplants, removal of pterygium, and LASIK, LASEK, PRK, RK limbal relaxing incision etc.)
• • 7. Any clinically significant condition that could affect IOL stability (e.g. zonular dialysis, evident zonular weakness or dehiscence, etc.)
• • 8. Patients with diagnosed degenerative visual disorders (e.g. macular degeneration or other retinal disorders, optic nerve atrophy etc.) or any other pathologies of the eye that are predicted to result in a visual acuity of 0.2 logMAR or worse during the study
• • 9. Current systemic or ocular pharmacotherapy that effects patients' vision with significant ocular side effects or any medications that could confound the outcome or increase subject risk
• • 10. Clinically significant gonioscopic abnormalities
• • 11. Amblyopia, strabismus, single eye status
• • 12. Rubella, congenital, traumatic or complicated cataracts
• • 13. History of or current anterior or posterior segment inflammation, including but not limited to iritis or uveitis
• • 14. Microphthalmos or macrophthalmos
• • 15. Pupil abnormalities (e.g. aniridia, abnormal shaped pupils, nonreactive pupils)
• • 16. Pseudoexfoliation
• • 17. Keratoconus or irregular astigmatism
• • 18. Inability to measure keratometry or biometry (including but not limited to cataract density, etc.)
• • 19. Pathologic miosis
• • 20. Pregnant, plan to become pregnant, lactating during the course of the investigation, or another condition with associated fluctuation of hormones that could lead to refractive changes
• • 21. Patients unable to meet the limitations of the protocol or likely of non-cooperation during the trial
• • 22. Patients whose freedom is impaired by administrative or legal order
• • 23. Concurrent participation in another clinical investigation in the last 30 days.