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Cataract surgery clarity: tool placement may shape recovery

NCT ID NCT07550907

Knowledge-focused Sponsor: Zhongshan Ophthalmic Center, Sun Yat-sen University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at 300 people having cataract surgery to see if where the surgeon places the phacoemulsification tip (the tool that breaks up the cataract) affects early healing. Researchers will use a special camera during surgery to track the tip's location and then measure corneal thickness and vision afterward. The goal is to find the best technique to reduce swelling and speed up visual recovery.

What this could mean

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

What this could lead to
If successful, this study could help surgeons refine their technique to reduce corneal swelling and improve visual recovery after cataract surgery.
What could go wrong
This is an observational study, not a treatment trial, so it won't directly test a new therapy. Results may not lead to immediate changes in practice.

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

About 300 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2026

Expected to finish

Jun 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

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 who are planning to receive phacoemulsification combined with intraocular lens implantation for unilateral/bilateral age-related cataract

Ages

50 to 90 years

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: * Age ≥ 50 years and ≤ 90 years * Diagnosis of unilateral/bilateral age-related cataract * Nuclear grade ≥2 in LOCSIII classification * Scheduled for cataract phacoemulsification combined with intraocular lens implantation * Pupil size ≥6mm after dilation * Corneal endothelial cell count ≥1500 cells/mm² Exclusion Criteria: * Diagnosis of severe systemic disease (e.g., severe hypertension or Alzheimer's disease) * History of ocular trauma or surgery * Presence of other ocular diseases (such as glaucoma, diabetic retinopathy, or high myopia) * Other ocular factors that may complicate the surgery (such as small pupil, shallow anterior chamber)

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Conditions

The condition(s) this trial relates to.

senile cataract

As listed by the trial registrant

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

Age-related cataract

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Zhongshan Ophthalmic Center, Sun Yat-sen University

    RECRUITING

    Guangzhou, Guangdong, 510000, China

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