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Can laser precision improve astigmatism correction during cataract surgery?

NCT ID NCT05750862

Disease control Sponsor: Frank Bochmann 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 06, 2026 · Last updated Aug 07, 2026 · Updated 1 time

Summary

This study tests whether a laser-guided system can mark the correct position for a toric intraocular lens more accurately than the traditional manual ink method during cataract surgery. The trial involves 30 patients with corneal astigmatism who are having femtosecond laser-assisted cataract surgery. The main goal is to measure how closely the laser marking matches the intended axis and how it compares to manual marking, with the hope of improving astigmatism correction and reducing lens repositioning.

What this could mean

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

Active substance
Topography-guided automatic laser marking of the intraocular lens axis during femtosecond laser-assisted cataract surgery, compared with manual ink marking.
What this could lead to
If successful, this could lead to more precise alignment of toric intraocular lenses, potentially improving astigmatism correction and reducing the need for lens repositioning after cataract surgery.
What could go wrong
The trial is small (30 participants) and non-randomized, so results may not apply broadly. Laser marking might not be more accurate than manual marking, and there are risks inherent to any eye surgery, such as infection or inflammation.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

30 people

The number who actually took part.

Started

Mar 2023

Finished

Jan 2025

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.

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: * Patients scheduled for cataract surgery who opt for a femtolaser-assisted cataract surgery (FLACS) and Implantation of a toric intraocular lens. (both are extra options not covered by the insurance) * Corneal astigmatism more than 1.o diopters confirmed in a measurement of corneal topography (Pentacam and Cassini topography devices) Exclusion Criteria: * Earlier corneal or intraocular refractive interventions (C-TEN, Lasik…) * Irregular corneal astigmatism * Corneal pathologies associated with ectasia and/or irregular astigmatism (Pterygium, Keratoconus, pellucide marginal degeneration…) * Earlier intraocular or ocular surface involving surgeries * Severe dry eye disease * Contraindication of performing cataract surgery under topical anaesthesia

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Conditions

The condition(s) this trial relates to.

astigmatism cataract senile cataract

As listed by the trial registrant

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

Astigmatism Cataract senile

Contacts and locations

Locations

  • Eye Clinic, Cantonal Hospital of Lucerne

    Lucerne, 6000, Switzerland

More trials for these conditions

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