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Magnetic pulses to the brain: a new way to sharpen failing eyesight?

NCT ID NCT06612190

Symptom relief Sponsor: Evidence Based Cataract Study Group 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 10, 2026 · Last updated Sep 11, 2026 · Updated 1 time

Summary

Researchers are testing whether transcranial magnetic stimulation (TMS), a non-invasive procedure that delivers magnetic pulses to the visual cortex, can improve eyesight in people with visual impairment. The trial enrolls 300 adults who have had cataract surgery or have a clear lens but still have poor best-corrected vision. Participants receive either active TMS or standard care for five consecutive days, then return for checkups every two weeks. The main measure is visual acuity, with visual field as a secondary measure.

What this could mean

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

Active substance
transcranial magnetic stimulation (TMS) of the visual cortex
What this could lead to
If it works, TMS could offer a non-invasive way to sharpen vision for people whose eyesight stays poor after cataract surgery.
What could go wrong
This is an early study with 300 participants, and brain stimulation for vision is experimental. TMS can cause headaches or scalp discomfort, and it is not yet clear whether any vision gains would last.

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

About 300 people

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

Started

Sep 2024

Expected to finish

Oct 2035

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.

Ages

6 to 80 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: * Post cataract surgery or clear lens * Best-corrected visual acuity less than 0.1logMAR Exclusion Criteria: * Diagnosed with cognitive impairment or mental disorders and unable to cooperate with treatment; * Diagnosed with ocular diseases that affect observation of visual function; * History of epileptic seizures; * Long term use of psychotropic drugs； * Metal implants in the body.

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Conditions

The condition(s) this trial relates to.

vision disorder

As listed by the trial registrant

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

Visual impairment

Contacts and locations

Locations

  • Eye and Ear, Nose Throat Hospital of Fudan University

    Shanghai, Shanghai Municipality, 200031, China

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