Infrared-based least-invasive third and second harmonic generation imaging of ocular tissues

Szu Yu Chen, Han Chieh Yu, I. Jong Wang, Chi Kuang Sun

研究成果: 雜誌貢獻會議論文同行評審


Cornea functions as an outermost lens and plays an important role in vision. For cornea diagnosis and treatment, a microscopic imaging system with cellular resolution and high eye safety is strongly desired. Recently, the cell morphology of corneal epithelium and endothelium can be revealed by confocal or two-photon fluorescence microscopy, while the collagen fibers in the corneal stroma can be shown by second harmonic generation (SHG) microscopy. However, in most of the developed imaging tools, visible to near-infrared light sources were used. To increase the eye safety, a light source with longer wavelength would be needed. In this presentation, a study using an infrared laser based nonlinear microscopy to investigate the ocular tissues of a mouse eye will be demonstrated. Since most of autofluorescence was suppressed under infrared excitation, third harmonic generation (THG) microscopy was used to revea the cellular morphology and ~700?m penetrability could be achieved. Combining SHG with THG, in an intact mouse eye, not only the cornea but also the upper half of the lens could be observed with cellular resolution. Our study indicated that infrared-based SHG and THG microscopy could provide a useful in vivo investigating tool for ophthalmology.

期刊Progress in Biomedical Optics and Imaging - Proceedings of SPIE
出版狀態已出版 - 2009
事件Multiphoton Microscopy in the Biomedical Sciences IX - San Jose, CA, United States
持續時間: 25 1月 200927 1月 2009


深入研究「Infrared-based least-invasive third and second harmonic generation imaging of ocular tissues」主題。共同形成了獨特的指紋。