Optical plasticity in fish lenses.
(2013) In Progress in Retinal and Eye Research 34(Online 20 December 2012). p.78-88- Abstract
- In a typical fish eye, the crystalline lens is the only refractive element. It is spherical in shape and has high refractive power. Most fish species have elaborate color vision and spectral sensitivity may range from the near-infrared to the near-ultraviolet. Longitudinal chromatic aberration exceeds depth of focus and chromatic blur is compensated for by species-specific multifocality of the lens. The complex optical properties of fish lenses are subject to accurate regulation, including circadian reversible adjustments and irreversible developmental tuning. The mechanisms optimize the transfer of visual information to the retina in diverse and variable environments, and allow for rapid evolutionary changes in color vision. Active... (More)
- In a typical fish eye, the crystalline lens is the only refractive element. It is spherical in shape and has high refractive power. Most fish species have elaborate color vision and spectral sensitivity may range from the near-infrared to the near-ultraviolet. Longitudinal chromatic aberration exceeds depth of focus and chromatic blur is compensated for by species-specific multifocality of the lens. The complex optical properties of fish lenses are subject to accurate regulation, including circadian reversible adjustments and irreversible developmental tuning. The mechanisms optimize the transfer of visual information to the retina in diverse and variable environments, and allow for rapid evolutionary changes in color vision. Active optical tuning of the lens is achieved by changes in the refractive index gradient and involves layers of mature, denucleated lens fiber cells. First steps have been taken toward unraveling the signaling systems controlling lens optical plasticity. Multifocal lenses compensating for chromatic blur are common in all major groups of vertebrates, including birds and mammals. Furthermore, the optical quality of a monofocal lens, such as in the human eye, is equally sensitive to the exact shape of the refractive index profile. Optical plasticity in the crystalline lens may thus be present in vertebrates in general. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3346939
- author
- Kröger, Ronald LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Crystalline lens, Color vision, Lens aberrations, Refractive index gradient, Lens fiber cell, Visual evolution
- in
- Progress in Retinal and Eye Research
- volume
- 34
- issue
- Online 20 December 2012
- pages
- 78 - 88
- publisher
- Elsevier
- external identifiers
-
- wos:000318744900004
- pmid:23262260
- scopus:84876738032
- pmid:23262260
- ISSN
- 1873-1635
- DOI
- 10.1016/j.preteyeres.2012.12.001
- language
- English
- LU publication?
- yes
- id
- 440437b0-8446-4294-9c5d-cb8a63c16490 (old id 3346939)
- date added to LUP
- 2016-04-01 11:14:15
- date last changed
- 2022-03-27 23:19:32
@article{440437b0-8446-4294-9c5d-cb8a63c16490, abstract = {{In a typical fish eye, the crystalline lens is the only refractive element. It is spherical in shape and has high refractive power. Most fish species have elaborate color vision and spectral sensitivity may range from the near-infrared to the near-ultraviolet. Longitudinal chromatic aberration exceeds depth of focus and chromatic blur is compensated for by species-specific multifocality of the lens. The complex optical properties of fish lenses are subject to accurate regulation, including circadian reversible adjustments and irreversible developmental tuning. The mechanisms optimize the transfer of visual information to the retina in diverse and variable environments, and allow for rapid evolutionary changes in color vision. Active optical tuning of the lens is achieved by changes in the refractive index gradient and involves layers of mature, denucleated lens fiber cells. First steps have been taken toward unraveling the signaling systems controlling lens optical plasticity. Multifocal lenses compensating for chromatic blur are common in all major groups of vertebrates, including birds and mammals. Furthermore, the optical quality of a monofocal lens, such as in the human eye, is equally sensitive to the exact shape of the refractive index profile. Optical plasticity in the crystalline lens may thus be present in vertebrates in general.}}, author = {{Kröger, Ronald}}, issn = {{1873-1635}}, keywords = {{Crystalline lens; Color vision; Lens aberrations; Refractive index gradient; Lens fiber cell; Visual evolution}}, language = {{eng}}, number = {{Online 20 December 2012}}, pages = {{78--88}}, publisher = {{Elsevier}}, series = {{Progress in Retinal and Eye Research}}, title = {{Optical plasticity in fish lenses.}}, url = {{http://dx.doi.org/10.1016/j.preteyeres.2012.12.001}}, doi = {{10.1016/j.preteyeres.2012.12.001}}, volume = {{34}}, year = {{2013}}, }