Cryoanesthesia for Intravitreal Injections

September 6, 2019 updated by: Anjali Shah, University of Michigan

The cryoanesthesia (CA) device is designed to provide anesthesia to a focal area on the surface of the eye immediately prior to intraocular injections.

The investigators plan to carry out a pilot study to collect preliminary data on the effectiveness of the cryoanesthesia (CA) device in minimizing the pain caused by intravitreal injections (IVT).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
23

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Michigan
      • Ann Arbor, Michigan, United States, 48105
        • Kellogg Eye Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 99 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Bilateral macular disease due to either exudative macular degeneration or diabetic retinopathy requiring bilateral intravitreal injections
  • Have had at least one prior intravitreal injection
  • Able to give informed consent

Exclusion Criteria:

  • Unilateral disease
  • Unable to provide consent
  • Preexisting conjunctival, episcleral or scleral defects or disease

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Cryoanesthesia Device -5 degrees Celsius for 10 seconds

All patients will have one eye randomized to receiving anesthesia via the cryoanesthesia device which anesthetizes by chilling rather than by use of drug, prior to receiving an intravitreal injection.

Comment: Cryoanesthesia Device is the name of the device.
Device: Cryoanesthesia device
The study will be carried out in patients receiving bilateral injections. One eye will be anesthetized using the cryoanesthesia device, developed at the University of Michigan. This has been assessed to be a Non-significant Risk device.
Experimental: Cryoanesthesia Device -5 degrees Celsius for 20 seconds

All patients will have one eye randomized to receiving anesthesia via the cryoanesthesia device which anesthetizes by chilling rather than by use of drug, prior to receiving an intravitreal injection.

Comment: Cryoanesthesia Device is the name of the device.
Device: Cryoanesthesia device
The study will be carried out in patients receiving bilateral injections. One eye will be anesthetized using the cryoanesthesia device, developed at the University of Michigan. This has been assessed to be a Non-significant Risk device.
Experimental: Cryoanesthesia Device -7 degrees Celsius for 20 seconds

All patients will have one eye randomized to receiving anesthesia via the cryoanesthesia device which anesthetizes by chilling rather than by use of drug, prior to receiving an intravitreal injection.

Comment: Cryoanesthesia Device is the name of the device.
Device: Cryoanesthesia device
The study will be carried out in patients receiving bilateral injections. One eye will be anesthetized using the cryoanesthesia device, developed at the University of Michigan. This has been assessed to be a Non-significant Risk device.
Experimental: Cryoanesthesia Device -10 degrees Celsius for 10 seconds

All patients will have one eye randomized to receiving anesthesia via the cryoanesthesia device which anesthetizes by chilling rather than by use of drug, prior to receiving an intravitreal injection.

Comment: Cryoanesthesia Device is the name of the device.
Device: Cryoanesthesia device
The study will be carried out in patients receiving bilateral injections. One eye will be anesthetized using the cryoanesthesia device, developed at the University of Michigan. This has been assessed to be a Non-significant Risk device.
Experimental: Cryoanesthesia Device -10 degrees Celsius for 20 seconds

All patients will have one eye randomized to receiving anesthesia via the cryoanesthesia device which anesthetizes by chilling rather than by use of drug, prior to receiving an intravitreal injection.

Comment: Cryoanesthesia Device is the name of the device.
Device: Cryoanesthesia device
The study will be carried out in patients receiving bilateral injections. One eye will be anesthetized using the cryoanesthesia device, developed at the University of Michigan. This has been assessed to be a Non-significant Risk device.
Active Comparator: Lidocaine

Participants randomized to this arm will have their other eye receive anesthesia via the current standard of care treatment method (lidocaine) prior to receiving an intravitreal injection.

Lidocaine: Lidocaine will be applied to the non-cryoanesthesia eye.
Drug: Lidocaine
Lidocaine applied to the non-cryoanesthesia eye.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Subjective Injection Pain
Time Frame: Immediately following the intravitreal injection
Immediately after receiving the intravitreal injection, patient's will be asked to rate their pain on the Visual Analogue (Pain) Scale. The scale ranges from 0 to 10. 0 meaning no pain and 10 meaning the worst possible pain.
Immediately following the intravitreal injection

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Michigan

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Anjali R Shah, MD, Instructor in Ophthalmology and Visual Sciences

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2018

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 2, 2016

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 15, 2016

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 18, 2016

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 17, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 6, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • HUM00105826

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated device product

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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