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Magnet for Corneal Foreign Bodies

The Use of a Magnet to Remove Corneal Foreign Bodies

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03778190
Enrollment
10
Registered
2018-12-19
Start date
2018-12-04
Completion date
2019-11-11
Last updated
2020-08-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Corneal Foreign Body

Brief summary

This is a prospective, interventional study to assess the effectiveness and safety of a commercially available eye magnet to remove corneal foreign bodies.

Detailed description

The vast majority of corneal foreign bodies are metallic and thus are frequently ferromagnetic. Consequently, it may be possible to use a magnet to remove most corneal foreign bodies. There are commercially available products for removing corneal foreign bodies, but there are no published studies assessing these devices. This will be a prospective interventional study to assess the use of an eye magnet for the removal of metallic corneal foreign bodies in the emergency department. After the patient signs written, informed consent, the physician will attempt to remove the corneal foreign body with the North by Honeywell 326734G Eye Magnet with Loop. If the physician is unable to remove the corneal foreign body with the magnet, he or she may proceed with standard care. The treating physician will fill out a brief data collection form for each patient to track various outcomes as discussed below.

Interventions

PROCEDURECorneal Foreign Body Removal

An eye magnet will be brought close to the foreign body on the surface of the eye in an attempt to remove the foreign body.

Sponsors

Nova Southeastern University
CollaboratorOTHER
Kendall Healthcare Group, Ltd.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* present to the emergency department with a metallic corneal foreign body

Exclusion criteria

* prisoners * pregnant women * have pacemakers or metallic facial implants * possible globe rupture

Design outcomes

Primary

MeasureTime frameDescription
Success Rate5 minutes.The percentage of patients in whom the magnet successfully removed the foreign body.

Secondary

MeasureTime frameDescription
Epithelial Damage5 minutesThe percentage of patients in whom the amount of fluorescein uptake on exam was more after the procedure compared to before the procedure.

Countries

United States

Participant flow

Participants by arm

ArmCount
Magnet
The physician will attempt to remove the corneal foreign body using an eye magnet for these patients. Corneal Foreign Body Removal: An eye magnet will be brought close to the foreign body on the surface of the eye in an attempt to remove the foreign body.
10
Total10

Baseline characteristics

CharacteristicMagnet
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
10 Participants
Race and Ethnicity Not Collected— Participants
Region of Enrollment
United States
10 Participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
10 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 10
other
Total, other adverse events
0 / 10
serious
Total, serious adverse events
0 / 10

Outcome results

Primary

Success Rate

The percentage of patients in whom the magnet successfully removed the foreign body.

Time frame: 5 minutes.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
MagnetSuccess Rate1 Participants
Secondary

Epithelial Damage

The percentage of patients in whom the amount of fluorescein uptake on exam was more after the procedure compared to before the procedure.

Time frame: 5 minutes

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
MagnetEpithelial Damage0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026