Refractive Errors Clinical Trial
Official title:
Vision Screening of the Four Year Old Children for the Detection of Amblyopia in The Town of Zagreb
INTRODUCTION. Amblyopia is defined as the loss of visual acuity (VA) in one or both eyes,
without any obvious structural or pathological anomalies. Amblyopic eye should be able to
regain some VA if treatment is initiated before the age of seven. It is the leading cause of
monocular blindness in the 20- to 70-year olds with prevalence 2-5%. Amblyopia is mainly
monocular, hence children are general asymptomatic. VA testing is the only reliable method of
detecting amblyopia, and the fourth year of life is considered best for vision screening
programs.
AIM: The purpose of the study is to reduce the preventable vision loss. The main goal of the
study is to evidence the problem of amblyopia in Zagreb and to release a model for formal,
government directed vision-screening program as a Croatian public health policy.
HYPOTHESIS. In Croatia, the prevalence and actual effect of amblyopia and amblyogenic
factors, along with treatment efficacy is impossible to quantify, since no population-based
studies have been performed regarding this issue. In addition, national screening of
preschool children does not exist, while the school-entry screening is prescribed by law. The
object of the study is to determine the prevalence of amblyopia in a 4-4.5 year old children
of The Town of Zagreb, the efficacy of screening and effectiveness of treatment on reducing
amblyopia prevalence. The primary hypothesis is defined: screening of visual acuity
monocularly at distance and near in 4-4.5 year old children in Zagreb is effective in
detecting amblyopia.
PATIENTS AND METHODS: Monocular vision of about 7000 children/ year aged 4-4.5 for whom both
parents gave consent is to be tested with Lea chart at near (40cm) and distance (3m) in the
kindergartens of The Town of Zagreb. The criterion for referral to complete ophthalmological
examination is VA <0.8.
n/a
Status | Clinical Trial | Phase | |
---|---|---|---|
Completed |
NCT04532099 -
Clinical Comparison of Two Daily Wear Frequent Replacement Silicone Hydrogel Soft Contact Lenses
|
N/A | |
Completed |
NCT05039112 -
Clinical Comparison of 2 Daily Disposable Toric Soft Contact Lenses
|
N/A | |
Completed |
NCT03670303 -
Trial of an Educational Intervention to Promote Spectacle Use Among Secondary School Children in Islamabad, Pakistan
|
N/A | |
Completed |
NCT02255474 -
Bifocal Lenses In Nearsighted Kids
|
N/A | |
Not yet recruiting |
NCT03222661 -
Direct Comparison of SVOne Obtained Refraction to Subjective Manifest Refraction
|
N/A | |
Completed |
NCT04055519 -
Clinical Performance Assessment of a Daily Wear Monthly Replacement Soft Silicone Hydrogel Contact Lens
|
N/A | |
Recruiting |
NCT05049070 -
Study to Evaluate the Reliability, Validity and Safety of Subjective Mobile Refraction
|
N/A | |
Completed |
NCT04527978 -
Clinical Comparison of 2 Daily Disposable Contact Lenses - Pilot Study 1
|
N/A | |
Recruiting |
NCT06077682 -
Cycloplegic Refraction in Pediatric Patients With Esotropia
|
Phase 4 | |
Not yet recruiting |
NCT04077086 -
Correcting Myopia Among Secondary School Children to Increase Academic High School Attendance Rates in Rural Communities
|
N/A | |
Withdrawn |
NCT04352868 -
Customizing Myopia Control With Multifocal Toric Contact Lens
|
N/A | |
Completed |
NCT04528017 -
Clinical Comparison of 2 Daily Disposable Contact Lenses - Pilot Study 2
|
N/A | |
Recruiting |
NCT04338880 -
Academic Performance and Refractive Error
|
||
Recruiting |
NCT04545073 -
Outcomes of a Trifocal IOL in Post-refractive Patients
|
||
Enrolling by invitation |
NCT05992675 -
Air Optix® Night and Day® Aqua Continuous Wear
|
||
Enrolling by invitation |
NCT05976750 -
Air Optix® Night and Day® Aqua Daily Wear
|
||
Recruiting |
NCT04693247 -
Handheld Device Compared With a Standard Eye Care Diagnostic Device in Measuring Ophthalmic Refraction
|
N/A | |
Recruiting |
NCT06065631 -
Seeing to Learn in Sierra Leone
|
N/A | |
Not yet recruiting |
NCT05550740 -
Repeated Low-Level Red-Light Therapy for Shortening Axial Length
|
N/A | |
Not yet recruiting |
NCT06044688 -
EyeQue VisionCheck 510(k) Clinical Trial
|
N/A |