Investigation the Effect of Active Vision Therapy Using Vision Therapy System 4 (VTS4) in Bilateral Refractive Amblyopia
Not Applicable
- Conditions
- amblyopia, lazy eye.Refractive amblyopia, bilateral,H53.023
- Registration Number
- IRCT20230823059229N1
- Lead Sponsor
- Shahid Beheshti University of Medical Sciences
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Pending
- Sex
- All
- Target Recruitment
- 40
Inclusion Criteria
Full patient consent to participate in the study
The minimum age is 5 and the maximum is 13 years
Bilateral refractive amblyopes
Astigmatism more than 1.5 diopters and hyperopia more than 3.00 diopters in each eye or a mix hyperopia-stigmatism
Maximum vision 20/40 and minimum vision 20/100 in each eye (moderate amblyopia)
Exclusion Criteria
Children who do not cooperate to perform the tests
Children who experience diplopia or nausea while using liquid crystal glasses
The presence of uncompensated phoria
Children who do not have the necessary follow-up for treatment.
The existence of pathological and structural problems of the eye
History of eye surgeries
The presence of nystagmus
strabismus, microtropia or eccentric fixation
Study & Design
- Study Type
- interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Visual acuity. Timepoint: before and after. Method of measurement: snellen vision chart LCD chart vision (model, HDC-9000N/PF, made in South Korea) Howitz company.;Stereoacuity. Timepoint: before and after. Method of measurement: Randot &; Vectogram Registered trade marks of Stereo Optical Co., Inc and Stereo Fly Stereotest of Stereo Optical Company Inc.;Contrast sensitivity. Timepoint: before and after. Method of measurement: Freiburg contrast sensitivity test, made in Germany, designed by Michael Bach, 2011 version.;Infacility of Accommodation. Timepoint: Before and after. Method of measurement: flipper lens and snellen near chart.
- Secondary Outcome Measures
Name Time Method