- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01297153
Aphakia Versus Pseudophakia in Children Under 2 Years Undergoing Bilateral Congenital Cataract Surgery
Aphakia vs Pseudophakia - Randomized Clinical Trial in Children Under 2 Years Undergoing Bilateral Congenital Cataract Surgery
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The use of IOLs in pediatric patients has become increasingly popular in recent years and may represent a standard of care for older children. The refinements in surgical techniques attained in adult cataract surgery have been translated to pediatric cataract surgery to produce a technically safe eye. Nevertheless, the use of IOLs in children younger than 2 years remains controversial. Exaggerated inflammation, capsular opacification and changing refractive status of the developing eye should be considered before the use of IOLs in the first two years of life. Further more, there is concern about the unknown risks of an IOL over the long life span.
Currently, there are 3 methods of optical rehabilitation following congenital cataract surgery :
- Primary IOL implantation.
- Aphakic glasses.
- Contact lenses.
At present, there is no randomized clinical trial reported to document the safety and efficacy of IOL implantation in children less than 2 years.
Aim : To compare the technical outcome (safety) and functional outcome (benefits) following primary IOL implantation and aphakia in children less than 2 years.
Study Type
Enrollment (Anticipated)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
-
-
Ahmedabad, India
- Iladevi Cataract & IOL Research Centre
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Children less than 2 years
- Congenital cataract
- Bilateral cataracts
- IOL fixation - Bag/Ciliary fixated
Exclusion Criteria:
- Microphthalmos (Mean axial length 2 SDs less than normal for age)
- Microcornea (Horizontal corneal diameter <9.5 mm-asper that particular age)
- Iris coloboma
- PHPV
- Aniridia
*Glaucoma - IOP more than or equal to 25 mmHg
- One eyed
- Cataract surgery already performed in fellow eye
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
ACTIVE_COMPARATOR: Aphakia
Prescribed within 2 weeks of surgery for both eyes. |
No IOL will be implanted in these eyes
|
ACTIVE_COMPARATOR: Pseudophakia
The patient is randomly assigned for aphakia / pseudophakia.
This is done only after vitrectomy.
Hydrophobic Acrysof IOL is implanted.All pseudophakic children will be refracted and given the residual correction within a month of surgery.
|
IOL fixation, material and size are important determinants of immediate and long-term outcome.
In-the-bag fixation is the most preferred site of IOL implantation.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Visual axis obscuration
Time Frame: 4 years
|
Visual axis obscuration(VAO) assesed on slitlamp or under operating microscope in dilated pupil.VAO is defined as fibrous or proliferative cell growth leadind to a dull retinoscopic reflex.
|
4 years
|
Glaucoma
Time Frame: 4 years
|
Intraocular pressure (IOP) measured with Perkins handheld applanation tonometer. Glaucoma defined as : IOP>21 mmHg >1 occasion with any of these 3 criteria
|
4 years
|
Central Corneal Thickness
Time Frame: 4 Years
|
Corneal thickness assessed by ultrasonic pachymetry.
An average of 3 values with an error less than 0.001 would be taken into account.
|
4 Years
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Visual Acuity
Time Frame: 4 years .
|
An Objective visual assessment to be performed using Lea Grating Paddles(Grating Acuity Test developed by Lea Hyvarinen16), Cardiff Acuity Cards(Preferential Looking Test17), or ETDRS (Early Treatment of Diabetic Retinopathy Study) chart.
Vision is subjectively assessed as the ability to follow or to fixate on a point source of light or on an object shown to the child.. Ocular alignment was measured using alternative cover testing.
If this kind of testing was not feasible, Hirschberg testing was performed..
|
4 years .
|
Collaborators and Investigators
Investigators
- Principal Investigator: Abhay R Vasavada, MS,FRCS, Iladevi Cataract And IOL Research Centre
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
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
- icircAP
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.
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