Journal article

Assessing ocular bulbar redness: a comparison of methods

Laura E Downie, Peter R Keller, Algis J Vingrys

OPHTHALMIC AND PHYSIOLOGICAL OPTICS | WILEY | Published : 2016

Abstract

PURPOSE: We consider whether quantification of ocular bulbar redness, using image processing of relative Red-channel activity (Red-value), can be applied to a clinical sample and how this approach compares to an automated bulbar redness grading technique (Oculus Keratograph 5M, R-scan). METHODS: Red-values from dry eye patients (n = 25) were determined using image processing of digital photographs over the nasal bulbar conjunctiva. Red-values were compared with subjective grades from six clinicians who graded the images using the IER scale. We considered the level of agreement between the Red-value and automated bulbar redness scores from the commercial instrument (R-scan). Scoring variabili..

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