- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02113709
Determining the Efficacy of Full-time Occlusion Therapy in Severe Amblyopia at Different Ages
Determining the Efficacy of Full-time Occlusion Therapy in Severe Amblyopia at All Ages
Objective: To find out how much visual improvement is possible in severe amblyopia using full-time occlusion therapy with an eye patch and to see if improvement is influenced by the patient's age.
Methods: An interventional clinical trial of 115 consecutive cases with unilateral, severe amblyopia was conducted at a tertiary referral center from Jan 2010 to Oct 2012. Patients were divided into three age groups: 3-7 years (n= 38), 8-12 years (n=41), 13-35 years (n=36). After a complete ophthalmological examination by a single ophthalmologist, cases with organic visual loss were excluded; cases with previous part-time occlusion therapy that had failed were included in the study. Patients were given optimal refractive correction for a month, followed by full-time occlusion therapy along with near visual activities for 3-4 hours/day. The therapy was continued until maximum visual recovery was achieved (6/6 Snellen's). Therapy was gradually reduced and stopped. Patients were followed-up regularly for the next 18 months.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Punjab
-
Lahore, Punjab, Pakistan, 54770
- Mughal Eye Trust Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- a visual acuity of 6/60 or 0.1-0.2 ETDRS in one eye and 6/6 or 1.0 ETDRS in the good eye
- strabismic amblyopia
- patients of any age were included.
Exclusion Criteria:
- structural damage to the eye (organic amblyopia)
- ametropic amblyopia
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Visual improvement
To see how efficiently visual improvement occurs by Full-time Occlusion therapy with an eye patch in severe amblyopia.
|
The good eye was occluded by a stick-on eye patch to stimulate the amblyopic eye and its neural connections to learn to see again.
To see how much improvement in visual acuity occurs by full-time occlusion therapy.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Visual Acuity improvement
Time Frame: 3 months
|
Full-time occlusion therapy of good eye was performed for 2-3 months while closely monitoring the vision of both the good and the amblyopic eye.
Vision was assessed by EDTRS Charts as well as Snellen's Chart.
|
3 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
improvement in stereopsis
Time Frame: 1 year
|
as equal visual acuity is attained by both eyes, the stereopsis also improves.
It was assessed by satandardized TNO plates with the patient wearing polarized glasses over their own corrective spectacles.
|
1 year
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Does the patched good eye develop occlusion amblyopia
Time Frame: 3 months
|
The vision of patched good eye was meticulously monitored to note the development of occlusion amblyopia
|
3 months
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Sameera Irfan, FRCS, Mughal Eye Trust Hospital, Lahore, Pakistan
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- SIrfanMEHT
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.
Clinical Trials on Strabismus
-
University of MiamiCompletedSuture Strabismus SurgeryUnited States
-
Universidad Autonoma de MadridActive, not recruiting
-
Assiut UniversityNot yet recruitingLarge Angle Horizontal StrabismusEgypt
-
South Valley UniversityEnrolling by invitation
-
Minia UniversityCompleted
-
Universidad Autonoma de MadridCompleted
-
Shahid Beheshti University of Medical SciencesUnknownHorizontal Strabismus With High AC/A RatioIran, Islamic Republic of
-
Sun Yat-sen UniversityRecruitingStrabismus | Exotropia | Esotropia | Vertical StrabismusChina
-
Tanta UniversityCompletedSurgical Procedure, Unspecified | Ocular Discomfort | Strabismus, Divergent
Clinical Trials on Occlusion therapy by Eye Patch
-
Xiaoliang GanUnknownChild | Anesthesia | AgitationChina
-
City, University of LondonImperial College LondonCompleted
-
Jaeb Center for Health ResearchNational Eye Institute (NEI); Pediatric Eye Disease Investigator GroupRecruitingIntermittent ExotropiaUnited States
-
Jaeb Center for Health ResearchNational Eye Institute (NEI); Pediatric Eye Disease Investigator GroupNot yet recruiting
-
Jaeb Center for Health ResearchNational Eye Institute (NEI)Completed
-
TC Erciyes UniversityRecruiting
-
Jaeb Center for Health ResearchNational Eye Institute (NEI)Completed
-
Taksim Egitim ve Arastirma HastanesiCompleted
-
Istanbul Sabahattin Zaim UniversityCompletedIntensive Care Unit SyndromeTurkey