We updated the design of this site on December 18, 2017. Learn more.
ClinicalTrials.gov Menu
IMPORTANT: Due to the lapse in government funding, the information on this web site may not be up to date, transactions submitted via the web site may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

Treatment of Meibomian Gland Dysfunction

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.
ClinicalTrials.gov Identifier: NCT01683318
Recruitment Status : Completed
First Posted : September 11, 2012
Last Update Posted : November 13, 2013
Information provided by (Responsible Party):

September 4, 2012
September 11, 2012
November 13, 2013
September 2012
October 2013   (Final data collection date for primary outcome measure)
ocular discomfort [ Time Frame: 3 months ]
Same as current
Complete list of historical versions of study NCT01683318 on ClinicalTrials.gov Archive Site
  • Tear Break Up Time (TBUT) [ Time Frame: 3 months ]
  • Number of blocked meibomian glands [ Time Frame: 3 months ]
  • Corneal fluorescein staining score [ Time Frame: 3 months ]
  • To measure the production of tears [ Time Frame: 3 months ]
    Schirmer's test uses paper strips inserted into the lower eyelid (conjunctival sac)for 5 minutes to measure the production of tears. Both eyes are tested at the same time. The paper is then removed and the amount of moisture is measured.
  • Tear evaporimetry [ Time Frame: 3 months ]
  • Lipid layer thickness [ Time Frame: 3 months ]
Same as current
Not Provided
Not Provided
Treatment of Meibomian Gland Dysfunction
Thermal Pulsation System for the Treatment of Meibomian Gland Dysfunction

The current study aims to test the efficacy of treatment for a device that utilises a thermal pulsation system, which applies heat from the inner surface of the eyelids (Lipiflow) in patients suffering from meibomian gland dysfunction.

Patients will be asked to undergo a one-time treatment with Lipiflow and the investigators will monitor them for changes in tear film and lipid composition, as well as changes in the anatomy of meibomian glands for over a study period of 12 weeks. Additionally, dry eye symptoms will be documented in form of questionnaires.

The investigators hypothesize that the treatment will be effective in improving clinical signs and will relieve dry eye symptoms for the patient. If this method of managing Meibomian Gland Dysfunction (MGD) is found to be efficacious and safe, it will be made available to patients in Singapore.

Not Provided
Not Provided
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Meibomian Gland Dysfunction (MGD)
Procedure: Thermal Pulsation therapy
Experimental: Treatment
Patients will undergo Thermal Pulsation treatment of Meibomian Gland Dysfunction using the TearScience System (Lipiflow).
Intervention: Procedure: Thermal Pulsation therapy
Yeo S, Tan JH, Acharya UR, Sudarshan VK, Tong L. Longitudinal Changes in Tear Evaporation Rates After Eyelid Warming Therapies in Meibomian Gland Dysfunction. Invest Ophthalmol Vis Sci. 2016 Apr 1;57(4):1974-81. doi: 10.1167/iovs.16-19088.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
Not Provided
October 2013   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  1. Eyelids must present with blocked meibomian gland openings (plugs), at least 1 visible MG plug in the 4 eyelids, or discernable change in consistency of meibum (increased in viscosity or opacity) when MG expressed in upper or lower eyelids.
  2. At least one out of 8 questions on dry eye symptoms is answered with often or all the time.
  3. Eyes should not show any other ocular surface pathology which required more treatment than eye lubricant and conventional eyelid hygiene.

Exclusion Criteria:

  1. Known history of thyroid disorders (diagnosed by physician).
  2. No ocular surgery within the previous 6 months and LASIK within the previous 1 year.
  3. Any intake of central nervous system and hormonal drugs within last 30 days and inability to withhold such drugs for at least 6 weeks.
  4. Active ocular infection or pterygium.
  5. Anticipated necessity to wear contact lens in the duration of the study.
  6. Living in the same household as another participant of the study.
  7. Any other specified reason as determined by clinical investigator, for example, the need to use any treatment or eyedrops not permitted by the study.
Sexes Eligible for Study: All
21 Years and older   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
Not Provided
Not Provided
Louis Tong, Singapore National Eye Centre
Singapore National Eye Centre
National University, Singapore
Not Provided
Singapore National Eye Centre
September 2012

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