The spectral transmission of freshwater teleost ocular media--an interspecific comparison and a guide to potential ultraviolet sensitivity.
Based on their spectral transmission, the lenses of 50 teleost species can be classified into three categories: "type 1" colourless lenses with 50% transmission points between 315 and 354 nm, "type 2" lenses which also appear colourless but have 50% cut-off points around 362-405 nm, and "type 3" lenses which are visibly yellow (50% transmission 425-450 nm). Most corneas transmit all wavelengths down to around 300 nm, with only 3 species showing a distinct yellow colouration. This distribution of ocular media transmission is related both to the phylogenetic group of the fish and to their photic environment.
Douglas
R H
RH
Department of Optometry and Visual Science, City University, London, U.K.
McGuigan
C M
CM
D000818:Animals; D003315:Cornea / Q000502:physiology*; D004463:Ecology; D005127:Eye Color; D005399:Fishes / Q000502:physiology*; D007908:Lens, Crystalline / Q000502:physiology*; D013045:Species Specificity; D013053:Spectrophotometry; D014466:Ultraviolet Rays; D014785:Vision, Ocular / Q000502:physiology