An investigation of the effect of silicone oil on polymer intraocular lenses by means of PALS, FT-IR and Raman spectroscopies.
The effect of the polydimethylsiloxane (PDMS) based silicone oil, that is widely used in vitreoretinal surgery, on internal structures of the polymer intraocular lenses was investigated. The effect of PDMS was studied on the polymethyl methacrylate (PMMA) rigid lenses and poly(2-hydroxyethyl methacrylate) (PHEMA) flexible lenses. The research was carried out by means of the positron lifetime spectroscopy (PALS) as well as the infrared spectroscopy (FT-IR) and the Raman spectroscopy (RS). The studies involving the use of PALS and FT-IR methods have revealed that the PHEMA based lenses absorbed, whereas the PMMA lenses did not absorb, silicone oil. The results obtained with the use of the RS method were inconclusive, probably due to the too low intensity of the characteristic PDMS bands. The evidence from this study was discussed in terms of physics and related to the clinical use of both silicone oil and intraocular lenses.
Jan Dlugosz University, Faculty of Mathematics and Natural Science, Institute of Physics, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland.
Kordian
K
Chamerski
AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Cracow, Poland.
Magdalena
M
Lesniak
AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Cracow, Poland.
Maciej
M
Sitarz
Department of Optometry and Biology of Visual System, Poznan University of Medical Sciences, ul. Rokietnicka 5D, 60-806 Poznań, Poland; Clinical Eye Unit and Pediatric Ophthalmology Service, Heliodor Swiecicki University Hospital, Poznan University of Medical Sciences, Poznań, Poland.
Marcin
M
Stopa
Jan Dlugosz University, Faculty of Mathematics and Natural Science, Institute of Physics, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland. Electronic address: j.filipecki@ajd.czest.pl.
Jacek
J
Filipecki
FT-IR; Intraocular lens; Positron annihilation; Raman spectroscopy; Silicone oil