Abstract:
PURPOSE:To demonstrate the application of multiphoton fluorescence (MF) and second harmonic generation (SHG) microscopy for ex vivo characterization of the structural alterations of human corneas due to keratoconus. METHODS:Buttons of keratoconic corneas derived from penetrating keratoplasty were sent for structural analysis with a custom-built multiphoton microscope. Fluorescence detected within the cytoplasm and the SHG signal obtained from collagen were used to demonstrate the morphologic changes in the corneal specimens. RESULTS:The fluorescent epithelial cells around the apical area were elongated and were aligned parallel to the adjacent collagen fibers. Parallel and centripetal distribution patterns of stromal collagen bundles were demonstrated at different depths within the keratoconic corneas. CONCLUSIONS:MF and SHG microscopy provides three-dimensional structural analysis of keratoconus ex vivo. It may provide important morphologic information for the investigation of the pathogenesis of keratoconus and may have potential in a clinical setting as an in vivo diagnostic and monitoring system for advancing keratoconus.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Tan HY,Sun Y,Lo W,Lin SJ,Hsiao CH,Chen YF,Huang SC,Lin WC,Jee SH,Yu HS,Dong CYdoi
10.1167/iovs.06-0386subject
Has Abstractpub_date
2006-12-01 00:00:00pages
5251-9issue
12eissn
0146-0404issn
1552-5783pii
47/12/5251journal_volume
47pub_type
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