The ocular pulse amplitude as a noninvasive parameter for carotid artery stenosis screening: a test accuracy study.
Knecht Pascal B, Menghini Moreno, Bachmann Lucas M, Baumgartner Ralf W, Landau Klara
This study found that ocular pulse amplitude (OPA) is significantly reduced in severe carotid artery stenosis. OPA could serve as a non-invasive, inexpensive screening tool for carotid artery stenosis, potentially reducing stroke incidence.