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Cataract lens still clear after 2 years? study checks for glistening

NCT ID NCT07297719

Knowledge-focused Sponsor: Carl Zeiss Meditec AG Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Aug 20, 2026 · Updated 3 times

Summary

This study checked how well a specific intraocular lens (CT LUCIA 621P) holds up at least two years after cataract surgery. Researchers looked for tiny fluid-filled bubbles called glistening and measured vision in 33 patients. The goal was to see if the lens remains safe and clear over time.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
CT LUCIA 621P intraocular lens
What this could lead to
If successful, this study could confirm the long-term safety and clarity of this lens, supporting its continued use in cataract surgery.
What could go wrong
This is a small, non-interventional follow-up study with only 33 participants, so results may not apply to all patients. It does not test a new treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

33 people

The number who actually took part.

Started

Dec 2025

Finished

Dec 2025

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients currently implanted with the CT LUCIA 621P IOL from the Aier Eye Hospital of BoAo Hope City

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Patients currently implanted with the CT LUCIA 621P IOL into the capsular bag in at least one eye and who participated in previous study "CT LUCIA 621P-BER-401-21"; 2. A minimum follow-up period of 24 months after the IOL implantation of the study eye (selected as the study eye in the previous study); 3. Patients willing and capable of providing informed consent; 4. Patients willing and capable of complying with visits and procedures as defined by this protocol. Exclusion Criteria: 1. Complications during cataract surgery with clinically significant impact; 2. Postoperative clinically significant corneal or retinal pathology as well as postoperative acute or chronic inflammatory ocular conditions (e.g. uveitis, iritis etc.); 3. Presence of clinically significant PCO with potential to limit the glistening evaluation; 4. IOL dislocation (the complete IOL is not stable fixated in the capsular bag); 5. Patients unable to meet the limitations of the protocol or likely of non-cooperation during the clinical investigation; 6. Patients whose freedom is impaired by administrative or legal order.

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Conditions

The condition(s) this trial relates to.

cataract senile cataract

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Cataract senile

Contacts and locations

Locations

  • Aier Eye Hospital of BoAo Hope City

    Hainan, Hainan, China

More trials for these conditions

Other studies related to the condition(s) this trial covers.