Dynamic light scattering spectroscopy of in-vivo human vitreous

Luigi Rovati; Franz Fankhauser Jr.; Jaro Ricka

doi:10.1117/12.229575

10 January 1996 Dynamic light scattering spectroscopy of in-vivo human vitreous

Luigi Rovati, Franz Fankhauser Jr., Jaro Ricka

Proceedings Volume 2632, Lasers in Ophthalmology III; (1996) https://doi.org/10.1117/12.229575
Event: BiOS Europe '95, 1995, Barcelona, Spain

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.

Citation Download Citation

Luigi Rovati, Franz Fankhauser Jr., and Jaro Ricka "Dynamic light scattering spectroscopy of in-vivo human vitreous", Proc. SPIE 2632, Lasers in Ophthalmology III, (10 January 1996); https://doi.org/10.1117/12.229575

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