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Refractive Accuracy of "2WIN" and Portable Autorefractors

Astigmatism Clinical Trial

Official title:
The Refractive Accuracy of Photoscreeners "2WIN" and "PlusoptiX" and the "Retinomax" Auto Refractor

Clinical Trial Summary

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.

Clinical Trial Description

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. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04249505
Study type Observational
Source Alaska Blind Child Discovery
Contact
Status Completed
Phase
Start date January 9, 2020
Completion date April 1, 2021
View Details
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