Doppler imaging measurements are repeatable in OAG patients

Article

The repeatability of colour Doppler imaging (CDI) measurements in open-angle glaucoma (OAG) patients has been confirmed by a study published in Journal of Glaucoma.

The repeatability of colour Doppler imaging (CDI) measurements in open-angle glaucoma (OAG) patients has been confirmed by a study published in Journal of Glaucoma.

Dr Rita Ehrlich et al., Department of Ophthalmology, Indiana School of Medicine, Indianapolis, Indiana, USA, conducted a cross-sectional, observational study on 116 OAG patients involved in the Indianapolis Glaucoma Progression Study. At the same time of day to baseline measurements were recorded 1 to 2 weeks apart on all patients. CDi measurements of retrobulbar blood flow velocities and Pourcelot's vascular resistance index (RI) were analysed.

Intraclass correlation coefficient (ICC) between the 2 baseline measurements was determined. Other measurements included the calculation of RI and peak systolic and end diastolic blood flow velocities (PSV/EDV) in the ophthalmic (OA), central retinal (CRA), and nasal and temporal short posterior ciliary arteries (N/TPCA).

Measurements in the OA were all above 0.82 in the intraobserver ICC for the PSV, EDV and RI. Measurements in the CRA were both above 0.8 in the intraobserver ICC PSV and RI. EDV in the CRA was found to be 0.64.

Intraobserver ICC in the N/TPCA for the PSV, EDV, and RI measurements varied between 0.71 and 0.88. It was generally similar to the intraobsever ICC for the OA and the CRA, but lower than 0.7 in the EDV and RI.

If performed on OAG patients within 2 weeks the blood flow velocities and calculated vascular resistance of the OA, CRA and PCA are repeatable.

Related Videos
ARVO 2024: Andrew D. Pucker, OD, PhD on measuring meibomian gland morphology with increased accuracy
 Allen Ho, MD, presented a paper on the 12 month results of a mutation agnostic optogenetic programme for patients with severe vision loss from retinitis pigmentosa
Noel Brennan, MScOptom, PhD, a clinical research fellow at Johnson and Johnson
ARVO 2024: President-elect SriniVas Sadda, MD, speaks with David Hutton of Ophthalmology Times
Elias Kahan, MD, a clinical research fellow and incoming PGY1 resident at NYU
Neda Gioia, OD, sat down to discuss a poster from this year's ARVO meeting held in Seattle, Washington
Eric Donnenfeld, MD, a corneal, cataract and refractive surgeon at Ophthalmic Consultants of Connecticut, discusses his ARVO presentation with Ophthalmology Times
John D Sheppard, MD, MSc, FACs, speaks with David Hutton of Ophthalmology Times
Paul Kayne, PhD, on assessing melanocortin receptors in the ocular space
Osamah Saeedi, MD, MS, at ARVO 2024
© 2024 MJH Life Sciences

All rights reserved.