To Compare the Effectiveness of 3 Different Types of Lens and Lens Coating in Eliminating Symptoms for Children With Prolonged Visual Symptoms Due to a Concussion. (SLICK)
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ClinicalTrials.gov Identifier: NCT03123822 |
Recruitment Status :
Recruiting
First Posted : April 21, 2017
Last Update Posted : July 16, 2020
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Concussion, Mild Convergence Insufficiency Accommodation; Insufficiency | Device: Glasses | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 90 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Triple (Participant, Care Provider, Investigator) |
Primary Purpose: | Treatment |
Official Title: | Spectacles Lens in Concussed Kids |
Actual Study Start Date : | January 26, 2018 |
Estimated Primary Completion Date : | January 2022 |
Estimated Study Completion Date : | January 2022 |
Arm | Intervention/treatment |
---|---|
Experimental: Single vision glasses
Typical glasses prescribed for children to correct only distance refractive error and to be worn all waking hours.
|
Device: Glasses
Glasses traditionally prescribed for refractive error |
Experimental: Single vision glasses with anti-glare coating
Typical glasses prescribed for children to correct only distance prescription with anti-glare coating and to be worn all waking hours.
|
Device: Glasses
Glasses traditionally prescribed for refractive error |
Experimental: Eyezen
Commercially available, low-powered, progressive addition lenses glasses with anti-glare coating to be worn all waking hours
|
Device: Glasses
Glasses traditionally prescribed for refractive error |
- Convergence Insufficiency Symptom Survey [ Time Frame: Assessed up to 12 months ]This survey quantifies convergence insufficiency symptoms on a scale and has been proven to be an effective and accurate gauge by previous research and study groups.
- Objective binocular vision findings [ Time Frame: Assessed up to 12 months ]Standard of care assessment of binocular vision function

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Ages Eligible for Study: | 9 Years to 17 Years (Child) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Sustained a concussion > 6 weeks < 16 weeks from date of initial visit
- Criteria for concussion: formally diagnosed by physician
- Minimum best corrected visual acuity: 20/25 in right and left eyes at distance and 20/30 both eyes at near
- Minimum Stereopsis: 500" global
- CISS score > 16
- Refractive error at least + 0.50D sphere or cylinder
- Ability to clear > 0.50 cycles per minute in monocular accommodative flipper of and binocular accommodative flipper of +/-1.50
Exclusion Criteria:
- Diplopia from nerve palsies
- Retinal pathology
- Previous treatment of any amount of bifocal lenses and base in prism since concussion.
- Vision therapy > 6 weeks since concussion

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03123822
Contact: Becky Luu, OD | 205-996-2319 | luu.becky@gmail.com | |
Contact: Katherine Weise, OD | kweise@uab.edu |
United States, Alabama | |
University of Alabama School of Optometry | Recruiting |
Birmingham, Alabama, United States, 35233 | |
Contact: Katherine Weise, OD kweise@uab.edu | |
Contact: Becky Luu, OD luu.becky@gmail.com |
Study Director: | Becky Luu, OD | University of Alabama at Birmingham | |
Principal Investigator: | Katherine Weise, OD | University of Alabama at Birmingham |
Responsible Party: | Katherine K Weise, Director of Pediatric Optometry Services, University of Alabama at Birmingham |
ClinicalTrials.gov Identifier: | NCT03123822 |
Other Study ID Numbers: |
2020 |
First Posted: | April 21, 2017 Key Record Dates |
Last Update Posted: | July 16, 2020 |
Last Verified: | July 2020 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Product Manufactured in and Exported from the U.S.: | Yes |
Brain Concussion Ocular Motility Disorders Brain Injuries, Traumatic Brain Injuries Brain Diseases Central Nervous System Diseases Nervous System Diseases |
Craniocerebral Trauma Trauma, Nervous System Head Injuries, Closed Wounds and Injuries Wounds, Nonpenetrating Cranial Nerve Diseases Eye Diseases |