Glaucoma is a degenerative, sight-threatening disease regarded as one of the major causes of blindness, accounting for an estimated 60  million people worldwide. By the year 2020 this number is thought to increase to around 80 million people globally.¹

In a recent study², the potential use of UWF imaging to detect glaucoma, and specifically to evaluate the reproducibility of measures of vertical cup-to-disc ratio (VCDR) using UWF, and the agreement between UWF and standard color digital stereoscopy (CDS), was conducted.

The purpose of this study was to evaluate the reproducibility and validity of UWF imaging in estimating VCDR measurements.

Observational study 100 eyes from 100 consecutive patients using CDS and UWF Northern Ireland Cohort for the Longitudinal Study of Aging (NICOLA)

A factor to consider when estimating VCDRs using different ophthalmic techniques is the dimension of the image it produces. 3D v 2D, as well as image color affecting appearance for interpretation of cup depression and elevation and vessel contours. However, previous studies have reported on the value of non-stereo fundus images to evaluate disc cupping reporting no differences in diagnostic performance between monoscopic and stereoscopic images when detecting glaucoma.^3,4

All color fundus disc photographs and UWF retinal images were …