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Japanese Journal of Ophthalmology

, Volume 62, Issue 5, pp 605–613 | Cite as

Near-infrared and short-wave autofluorescence in ocular specimens

  • Yasuharu OguchiEmail author
  • Tetsuju Sekiryu
  • Mika Takasumi
  • Yuko Hashimoto
  • Minoru Furuta
Laboratory Investigation
  • 134 Downloads

Abstract

Purpose

To determine histopathologic characteristics of near-infrared autofluorescence (NIR-AF) and short-wave autofluorescence (SW-AF) in ocular tissue.

Study design

Retrospective study.

Methods

Unstained specimens from four enucleated eyes with uveal melanoma were prepared for evaluation by fluorescence microscopy. The filter settings for SW-AF were 450-490 nm for excitation, 500-550 nm for emission and for NIR-AF 672.5-747.5 nm and 765-855 nm respectively.

Results

Hyper-SW-AF was detected in the cornea, crystalline lens, anterior border layer of the iris, basement membrane of the iris posterior epithelium, retinal pigment epithelium (RPE), Bruch’s membrane, and sclera. Hyper-NIR-AF was detected in pigmented tissues, i.e., iris anterior border layer, iris posterior epithelium, ciliary pigmented epithelium, RPE, pigmented cells in the choroid and pigmented cells in the melanoma tumoral masses. The iris anterior border layer had hyper-SW-AF and hyper-NIR-AF with low magnification. The cells on the iris surface were with hyper-SW-AF; under the iris surface cells with hyper-NIR-AF were detected with high magnification. Both hyper-SW-AF and hyper-NIR-AF were in RPE cells. Pigmented cells with hyper-NIR-AF in other uveal tissues did not have hyper-SW-AF. The pigmented cells in the melanoma tumoral masses had very weak NIR-AF.

Conclusions

NIR-AF was seen in the ocular pigmented tissues. The only pigmented tissue with both hyper-SW-AF and hyper-NIR-AF was RPE, the combination of which might help interpret the cellular components of fundus lesions.

Keywords

lipofuscin melanin near-infrared autofluorescence short-wave autofluorescence melanoma 

Notes

Conflicts of interest

Y. Oguchi, None; T. Sekiryu, None; M. Takasumi, None; Y. Hashimoto, None; M. Furuta, None.

Financial Support

None.

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Copyright information

© Japanese Ophthalmological Society 2018

Authors and Affiliations

  • Yasuharu Oguchi
    • 1
    Email author
  • Tetsuju Sekiryu
    • 1
  • Mika Takasumi
    • 2
  • Yuko Hashimoto
    • 3
  • Minoru Furuta
    • 1
  1. 1.Department of OphthalmologyFukushima Medical University School of MedicineFukushima CityJapan
  2. 2.Department of ImmunologyFukushima Medical University School of MedicineFukushima CityJapan
  3. 3.Department of Diagnostic PathologyFukushima Medical University School of MedicineFukushima CityJapan

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