Can the red-green duochrome test be used prior to correcting the refractive cylinder component?

Liat Gantz, Shlomo Schrader, Ruthie Ruben, Ari Z. Zivotofsky

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Purpose: A primary task of the eye care professional is determining the refraction, or optical correction, of a patient. The duochrome red-green test is a standard tool for verification of the final refraction. Traditionally, it is recommended for use both prior to and subsequent to determining the cylindrical or astigmatic component of the refraction. In order for it to be effective when used before correcting the cylinder it is necessary that the COLC (Circle of Least Confusion) be on the retina. This study examined whether it is necessarily true that the duochrome response in uncorrected astigmatism will be as trust-worthy as it is with corrected cylinders.

Original languageEnglish
Article numbere0118874
JournalPLoS ONE
Volume10
Issue number3
DOIs
StatePublished - 16 Mar 2015

Bibliographical note

Publisher Copyright:
© 2015 Gantz et al.

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