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Proceedings Paper

Dynamic light scattering spectroscopy of in-vivo human vitreous
Author(s): Luigi Rovati; Franz Fankhauser Jr.; Jaro Ricka
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Paper Abstract

In-vivo dynamic light scattering measurements in the vitreous of the human eye are presented. The set-up employs single-mode optical fibers for the delivery of the excitation beam and for the collection of the scattered light. High sensitivity and good spatial resolution are achieved using a novel scattering geometry: the excitation beam is shaped into a hollow cone and the scattered light collected through its central part. The apparatus exhibits excellent safety characteristics: the optical power entering the patient's eye is 36 times less than the maximum laser power at the cornea recommended for intrapupil exposure by the ANSI standard. Following a description of the instrument, examples of in-vivo measurements in the vitreous are discussed in order to demonstrate the possible clinical use of this technique.

Paper Details

Date Published: 10 January 1996
PDF: 6 pages
Proc. SPIE 2632, Lasers in Ophthalmology III, (10 January 1996); doi: 10.1117/12.229575
Show Author Affiliations
Luigi Rovati, Univ. Eye Clinic (Switzerland)
Franz Fankhauser Jr., Univ. Eye Clinic (Switzerland)
Jaro Ricka, Univ. of Bern (Switzerland)

Published in SPIE Proceedings Vol. 2632:
Lasers in Ophthalmology III
Reginald Birngruber; Adolf Friedrich Fercher, Editor(s)

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