Comparative Validation of "Blinq" and "2WIN" Vision Screeners
NCT ID: NCT04195711
Last Updated: 2020-10-19
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
100 participants
OBSERVATIONAL
2019-11-18
2019-11-26
Brief Summary
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Adult and children pediatric and strabismus patients were screened with blinq and "2WIN" photoscreener with "CR" corneal reflex alignment test and then compared to confirmatory exam with age-appropriate determination of binocular status.
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Detailed Description
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Each patient was screened with a recently commercially released blinq screener according to manufacturer's recommendations. If an initial interpretation of "pass" or "refer" was not achieved, then repeat efforts with "timed out" or "inconclusive" were accomplished and results evaluated as if a "refer." An example of blinq birefringent screening is shown in \[video\].
Patients were screened with the binocular infrared autorefractor "2WIN" according to manufacturer guidelines. Refractive referral criteria were not age-stratified.
The "Rebion blinq" is a unique screening method and therefore we sought to provide appropriate validation. In addition to non-age stratified AAPOS 2003 Uniform guidelines, we collected all cases characterized by constant or persistent strabismus whether large- or small angle employing cover test, 4 base out test, Bruckner Test and "2WIN CR" function. We did not employ any method of retinal videographic analysis of fixation instability.
De-identified patient data recorded for sharing on study website.
Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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blinq screened
Patients screened by new birefringent screener
objective pediatric vision screen, "blinq,"
hand-held birefringent screener for simultaneous foveation
Interventions
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objective pediatric vision screen, "blinq,"
hand-held birefringent screener for simultaneous foveation
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
\-
Exclusion Criteria
\-
1 Year
65 Years
ALL
No
Sponsors
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Alaska Blind Child Discovery
OTHER
Responsible Party
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Locations
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Alaska Children's EYE & Strabismus
Anchorage, Alaska, United States
Countries
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References
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Birch EE, Subramanian V, Weakley DR. Fixation instability in anisometropic children with reduced stereopsis. J AAPOS. 2013 Jun;17(3):287-90. doi: 10.1016/j.jaapos.2013.03.011.
Gramatikov BI, Irsch K, Wu YK, Guyton DL. New pediatric vision screener, part II: electronics, software, signal processing and validation. Biomed Eng Online. 2016 Feb 4;15:15. doi: 10.1186/s12938-016-0128-7.
Arnold SL, Arnold AW, Sprano JH, Arnold RW. Performance of the 2WIN Photoscreener With "CR" Strabismus Estimation in High-Risk Patients. Am J Ophthalmol. 2019 Nov;207:195-203. doi: 10.1016/j.ajo.2019.04.016. Epub 2019 May 9.
Arnold RW. Comparative AAPOS Validation of the Birefringent Amblyopia Screener with Isolated Small-Angle Strabismus. Clin Ophthalmol. 2020 Jan 31;14:325-329. doi: 10.2147/OPTH.S242335. eCollection 2020.
Other Identifiers
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ABCD blinq 2WIN
Identifier Type: -
Identifier Source: org_study_id
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