Refractive Accuracy of "2WIN" and Portable Autorefractors

Study Results

Results pending

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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Recruitment Status

COMPLETED

Total Enrollment

708 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-01-09

Study Completion Date

2021-04-01

Brief Summary

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Youth and some adults have photoscreening refractions and hand-held auto refraction before cycloplegia refraction during new and follow up eye examinations. Vector math is applied to each refraction to determine how closely the hand-held "dry" devices match actual refraction.

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Detailed Description

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A closeness-of-fit algorithm utilizing vector transformations of astigmatism is designed and applied to 50-years of clinical international refractive experience.

As a part of new and follow up comprehensive eye examinations, patients and parents consented to confirm the cycloplegic refraction to other portable refractive tools.

The ability of photoscreeners "2WIN" ("Adaptica," Padova italy), "PlusoptiX A12" (Nuremberg, Germany) and "Retinomax" (Righton, Tokyo, Japan) to match actual refraction is assessed utilizing the new algorithm.

This algorithm could then be applied to batches of donated spectacles distend by charitable organizations worldwide if portable auto refracting devices are employed.

Conditions

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Refractive Error - Myopia Axial Astigmatism Accomodation Visual Impairment Hyperopia of Both Eyes

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Interventions

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"2WIN" Photoscreener

non-cycloplegia refraction by Adaptica "2WIN"

Intervention Type DEVICE

"Plusoptix A12"

non-cycloplegic refraction by "Plusoptix A12" photoscreener

Intervention Type DEVICE

"Retinomax"

non-cycloplegic refraction by "Retinomax K+" auto refractor

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Patient undergoing new or follow examination at pediatric eye and adult strabismus clinic Willing to undergo screening refractive device developmental delays included