Journal of Comparative Physiology A

, Volume 195, Issue 2, pp 175–182 | Cite as

Lens optical properties in the eyes of large marine predatory teleosts

  • Ronald H. H. Kröger
  • Kerstin A. Fritsches
  • Eric J. Warrant
Original Paper

Abstract

The optical properties of the crystalline lenses were studied in a variety of large predatory teleosts (bony fishes) that forage in the open ocean, some of them at considerable depths. We found the first fish lenses that are free of measurable longitudinal spherical aberration, i.e., are perfectly monofocal, in contrast to the multifocal lenses that are typical for smaller fishes living close to the surface. In fact, none of the lenses investigated in this study were clearly multifocal. Most, but not all, of the lenses had long normalized focal lengths (focal length/lens radius) of up to 3.3 lens radii. A monofocal lens of long focal length, combined with spectrally suitably placed cone pigments, may be the optimal solution for vision of high spatial and spectral resolutions in a habitat where the available spectrum of light is limited.

Keywords

Fish Color vision Longitudinal spherical aberration Longitudinal chromatic aberration Focal length 

List of abbreviations

PBS

Phosphate buffered saline

LCA

Longitudinal chromatic aberration

LSA

Longitudinal spherical aberration

BCD

Back center distance

BEP

Beam entrance position

f

Focal length

Re

Equatorial lens radius

SWS

Short wavelength sensitive

MWS

Middle wavelength sensitive

LWS

Long wavelength sensitive

λmax

Wavelength of maximum absorbance

R2

Coefficient of determination

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Ronald H. H. Kröger
    • 1
  • Kerstin A. Fritsches
    • 2
  • Eric J. Warrant
    • 1
  1. 1.Department of Cell and Organism BiologyLund UniversityLundSweden
  2. 2.School of Biomedical SciencesUniversity of QueenslandBrisbaneAustralia

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