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Tear Film Topography
Author(s) -
NOCHEZ Y,
HABAY T,
PISELLA PJ
Publication year - 2011
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2011.4471.x
Subject(s) - wavefront , optics , interferometry , shearing (physics) , aberrations of the eye , computer science , wavefront sensor , ophthalmology , dry eyes , visualization , optometry , materials science , computer vision , medicine , artificial intelligence , physics , composite material
Purpose Patient complaints such as blurry vision are a very common symptom of dry eye syndrome. We will summarize technologies to measure the optical effects of tear film instability. Methods There are several noninvasive techniques for assessing the kinetics of tear film : high‐speed videokeratoscopy, dynamic wavefront sensing and lateral shearing interferometry. Interferometry or break up time are sensitive techniques for recording tear film surface irregularities in a noninvasive manner. Results However, in order to understand the visual complaints associated with tear film instability, we need some dynamic visualization of the corneal tear film quality. Shack‐Hartmann wavefront sensor and wavefront aberration could realize an objective evaluation of optical quality of the eye between blinks. We will discuss the use of higher‐order aberrations fluctuations during 10 seconds. At last, we will try to quantify the visual impact of dry eye using objective scattering index. Conclusion Dynamic aberration maps may be used for diagnosis of dry eye and for monitoring drops efficiency.