The goal of this prospective cohort study is to compare visual quality after cataract surgery in patients implanted with a new domestic trifocal intraocular lens (D615L) versus the Zeiss AT LISA tri 839MP. The main question it aims to answer is: Is the uncorrected distance, intermediate, and near visual acuity achieved with D615L non-inferior or superior to that achieved with the Zeiss 839MP? Participants diagnosed with age-related cataract will undergo phacoemulsification and receive one of the two intraocular lenses. They will attend follow-up visits where uncorrected visual acuity, defocus curves, and the VF-14 questionnaire will be assessed over a follow-up period of at least 6 months.
Who can participate
Age range
50 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* diagnosed age-related cataract;
* preoperative corneal astigmatism \<1.0 D;
* endothelial cell count \>2000/mm²;
* signed informed consent and ability to complete 6-month follow-up
Exclusion Criteria:
* prior corneal refractive, glaucoma or vitreoretinal surgery;
* intraoperative posterior capsule rupture, zonular dehiscence or vitreous loss;
* corneal pathology, macular edema or optic neuropathy affecting visual assessment;
* active ocular inflammation, glaucoma, maculopathy or diabetic retinopathy;
* uncontrolled systemic disease such as diabetes or autoimmune disorders.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
UIVA
Timeframe: From enrollment to the end of treatment at 6 months