PWV (pulse wave velocity) — prędkość fali tętna
https://www.google.pl/#q=pulse wave velocity eyes
IN-pulse-wave
Is pulse-wave velocity in retinal arteries of healthy ...
Abstract
Purpose Pulse wave velocity in large vessels has been extensively used in clinical practice as an indirect measure of arterial stiffness and an indicator of cardiovascular risk factors. Arterial stiffness increases with age and in coronary arterial disease. An in-vivo clinical method to characterise arterial stiffness of the central microcirculation was developed. Pulse wave velocity was measured in retinal arteries using the Dynamic Vessel Analyzer (DVA, Fa. IMEDOS, Jena).
http://onlinelibrary.wiley.com/doi/10.1111/j.1755-3768.2008....
IMPALPABLE ARTERIES
https://www.google.pl/#q=arteries are impalpable

[...]
ABSTRACT Measurement of pulse wave velocity (PWV) in large vessels has been ... dynamic vessel analyzer in a randomly chosen eye of 10 young

INNE:
https://www.google.pl/#q=pulse wave velocity eyes

ARTERY/ ARTERIES + IMPALPABLE- DIVERSE CONTEXTS

https://www.google.pl/#q=impalpable arteries eyes&start=10





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Note added at   49 min (2015-09-16 10:26:25 GMT)
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Kombinowałbym z "outside (of) the range of...(zwrot dość uniwersalny)
Przepraszam za klejenie references. Okulistyka nie jest mi z pewnością na tyle znana aby proponować jakiekolwiek przedwczesne odpowiedzi.