This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Thickness of Retinal Layers in Amblyopia

This study has been completed.
Information provided by:
Samsung Medical Center Identifier:
First received: August 5, 2010
Last updated: August 10, 2010
Last verified: August 2010
The purpose of this study is to examine retinal layer thickness in amblyopia.

Condition Intervention
Amblyopia Other: Optical coherence tomography

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Analysis of Spectral Domain Optical Coherence Tomography Measurements in Amblyopia

Resource links provided by NLM:

Further study details as provided by Samsung Medical Center:

Primary Outcome Measures:
  • Retinal layer thickness [ Time Frame: One month ]
    Optical coherence tomography scan will be conducted to analyze retinal layer thickness, when the patient are enrolled.

Enrollment: 22
Study Start Date: April 2010
Study Completion Date: June 2010
Primary Completion Date: June 2010 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Retinal layer thickness analysis
Optical coherence tomography will be conducted to analyze retinal layer thickness (safe examination)
Other: Optical coherence tomography
Spectral domain optical coherence tomography will be conducted once when patients are enrolled.
Other Name: Spectralis Optical coherence tomography

Detailed Description:
Amblyopia is a visual disorder characterized by a reduction of vision that cannot be immediately improved by refractive correction or accounted for by clinically determined anatomic defects of the eye or visual pathway. Evidence for direct retinal changes in eyes with amblyopia has been controversial. It has been hypothesized that amblyopia may affect the postnatal maturation of the retina including the postnatal reduction of retinal ganglion cells. However, although some studies have found incrased retinal nerve fiber layer thickness in amblyopic eyes, others have found no significant differences. This sutdy will examine the retinal layer thickness in amblyopia and compare the retinal layer thickness between amblyopic eyes and nonamblyopic fellow eyes.

Ages Eligible for Study:   4 Years to 19 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
patients in tertiary hospital

Inclusion Criteria:

  • Amblyopia

Exclusion Criteria:

  • Other retinal disease
  • Anisometropia
  • Neurologic abnormalities
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01179763

Korea, Republic of
Samsung Medical Center
Seoul, Korea, Republic of
Sponsors and Collaborators
Samsung Medical Center
Study Chair: Sei Yeul Oh, M.D. Samsung Medical Center
  More Information

Responsible Party: Se Yeul Oh, M.D., Samsung Medical Center Identifier: NCT01179763     History of Changes
Other Study ID Numbers: 2009-12-089
Study First Received: August 5, 2010
Last Updated: August 10, 2010

Keywords provided by Samsung Medical Center:
Retinal layer thickness

Additional relevant MeSH terms:
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vision Disorders
Sensation Disorders
Neurologic Manifestations
Eye Diseases
Signs and Symptoms processed this record on September 19, 2017