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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 2, Iss. 6 — Jun. 1, 2011
  • pp: 1494–1503

Two-photon excited autofluorescence imaging of freshly isolated frog retinas

Rong-Wen Lu, Yi-Chao Li, Tong Ye, Christianne Strang, Kent Keyser, Christine A. Curcio, and Xin-Cheng Yao  »View Author Affiliations

Biomedical Optics Express, Vol. 2, Issue 6, pp. 1494-1503 (2011)

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The purpose of this study was to investigate cellular sources of autofluorescence signals in freshly isolated frog (Rana pipiens) retinas. Equipped with an ultrafast laser, a laser scanning two-photon excitation fluorescence microscope was employed for sub-cellular resolution examination of both sliced and flat-mounted retinas. Two-photon imaging of retinal slices revealed autofluorescence signals over multiple functional layers, including the photoreceptor layer (PRL), outer nuclear layer (ONL), outer plexiform layer (OPL), inner nuclear layer (INL), inner plexiform layer (IPL), and ganglion cell layer (GCL). Using flat-mounted retinas, depth-resolved imaging of individual retinal layers further confirmed multiple sources of autofluorescence signals. Cellular structures were clearly observed at the PRL, ONL, INL, and GCL. At the PRL, the autofluorescence was dominantly recorded from the intracellular compartment of the photoreceptors; while mixed intracellular and extracellular autofluorescence signals were observed at the ONL, INL, and GCL. High resolution autofluorescence imaging clearly revealed mosaic organization of rod and cone photoreceptors; and sub-cellular bright autofluorescence spots, which might relate to connecting cilium, was observed in the cone photoreceptors only. Moreover, single-cone and double-cone outer segments could be directly differentiated.

© 2011 OSA

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(330.5380) Vision, color, and visual optics : Physiology
(170.2655) Medical optics and biotechnology : Functional monitoring and imaging

ToC Category:
Vision, Color, and Visual Optics

Original Manuscript: March 3, 2011
Revised Manuscript: May 7, 2011
Manuscript Accepted: May 7, 2011
Published: May 11, 2011

Virtual Issues
Cellular Imaging of the Retina (2011) Biomedical Optics Express

Rong-Wen Lu, Yi-Chao Li, Tong Ye, Christianne Strang, Kent Keyser, Christine A. Curcio, and Xin-Cheng Yao, "Two-photon excited autofluorescence imaging of freshly isolated frog retinas," Biomed. Opt. Express 2, 1494-1503 (2011)

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