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Levator Muscle Strength Evaluation

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02226016
Recruitment Status : Unknown
Verified August 2014 by shay ofir, Meir Medical Center.
Recruitment status was:  Not yet recruiting
First Posted : August 26, 2014
Last Update Posted : August 26, 2014
Information provided by (Responsible Party):
shay ofir, Meir Medical Center

Tracking Information
First Submitted Date  ICMJE August 11, 2014
First Posted Date  ICMJE August 26, 2014
Last Update Posted Date August 26, 2014
Study Start Date  ICMJE September 2014
Estimated Primary Completion Date September 2015   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: August 23, 2014)
levator muscle strength quantified in grams using a unique measuring device. [ Time Frame: each patient will undergo two measurments of the levator muscle strength using the study device during a single clinical evaluation. no further evaluations will be made for the same patient throughout the study. ]
we aim to accurately measure the levator muscle strength in grams. the levator muscle will be noninvasively attached to the device using a string. while changing eye position from closure to opening- the force generated by the eyelid will be reflected through the string to the measuring device and will be displayed in grams. this will reflect the levator muscles strength.
Original Primary Outcome Measures  ICMJE Same as current
Change History No Changes Posted
Current Secondary Outcome Measures  ICMJE
 (submitted: August 23, 2014)
repeatability of the measurements [ Time Frame: each patient will undergo two measurments of the levator muscle strength using the study device during a single clinical evaluation. no further evaluations will be made for the same patient throughout the study. ]
we wish to evaluate the validity of these muscle strength assessments. for each patient two muscle measurements will be done by a single clinician. their results will be furtherly assessed for repeatability of the measurement.
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title  ICMJE Levator Muscle Strength Evaluation
Official Title  ICMJE Quantitative Evaluation of Levator Palpebra Muscle Strength
Brief Summary

The purpose of this study is to assess a new technique of measurement for the levator muscle.

this measurement may be applied during a clinical evaluation of eyelid malposition.

our purpose is to quantify the levator muscle strength and to corelate it to standard levator muscle strength assessment techniques routinley used in the oculoplastic clinic.

Detailed Description

This study will include patients refered to our oculoplastic department for evaluation of eyelid disorders (ptosis or eyelid malpositions due to various mechanical, muscular, neurogenic factors).

all patients will be over 21 years old, with eligibility for signing an informed concent form.

all patients will undergo a full clinical standard evaluation of eyelid malposition made as part of the routine evaluation of eyelid malpositions. as part of this evaluation- the levator muscles strength will be measured by monitoring the amount of millimeters of difference between the uper lid closed and open position (a regular technique for levator muscles assessment).

a second levator muscle strength evaluation will include the study device. this device is used for weight evaluation of objects. an object is measured by attaching it to the device with a metal hook and a string. the device is hand held.

for measurements of the upper lid force the device will be temporarily attached to the upper eyelid using a specially designed base made in the shape of the eyelid. the attachment will be using a sterile medical tape (plaster). this sterile base is attached to the outer eyelid and does not involve in any point any harm to the continuity of the skin, injections , harm or contact to the eyeball or any other parts of the eye. this base is attached from its back to a string witch attaches to the measuring device. the investigator holds the measuring device and asks the patient to open and close his eyes. the force that is generated while opening the upper lid is measured (in grams) by the device.

this evaluation will allow a unique first proper estimation of the true levator palpebra strength. it will be compared to the levators' strength as estimated using the routine techniques for assessing their efficacy.

the assessment will be made one time for each patient. after the measurement- the sterile tape will be removed and will be disposed. no further interventions will be made for each patient.

Study Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Condition  ICMJE Ptosis
Intervention  ICMJE Device: FG-5000A
a measuring device for the assessment of levator muscle strength
Other Name: an experimental measurinf device for a mechanical evaluation of the levator palpebra superioris muscle strength
Study Arms  ICMJE Experimental: Ptosis
Device (measurement of levator strength in patients with upper lid ptosis)
Intervention: Device: FG-5000A
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status  ICMJE Unknown status
Estimated Enrollment  ICMJE
 (submitted: August 23, 2014)
Original Estimated Enrollment  ICMJE Same as current
Estimated Study Completion Date  ICMJE September 2015
Estimated Primary Completion Date September 2015   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

eligible for signing an informed concent form refered for eyelid evaluation in the oculoplastic department, Meir Mc

Exclusion Criteria:

previous eyelid surgery

Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 21 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE Israel
Removed Location Countries  
Administrative Information
NCT Number  ICMJE NCT02226016
Other Study ID Numbers  ICMJE LEVATOR01
Has Data Monitoring Committee No
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party shay ofir, Meir Medical Center
Study Sponsor  ICMJE Meir Medical Center
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Principal Investigator: Arik Nemet, Dr Meir Medical Center
PRS Account Meir Medical Center
Verification Date August 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP