... ). Chromatic aberration arises from a property that essentially all transparent materials (such as those used in biological optics) possess – their refractive index (see Glossary) decreases with wavelength. Consequently, short-wavelength images are focused closer to a lens than longer-wavelength ones. Because...

... for either self-screening by the retinas or longitudinal chromatic aberration of the lens. REFERENCES Barber V. C. , Evans E. M. , Land M. F. ( 1967 ). The fine structure of the eye of the mollusc Pecten maximus . Cell Tissue Res. 76 , 295 - 312 . Blest A. D. , Hardie...

... of the Gulf of Aqaba . Aqaba: Marine Science Station. Kröger, R. H. H. and Campbell, M. C. W. ( 1996 ). Dispersion and longitudinal chromatic aberration of the crystalline lens of the African cichlid fish Haplochromis burtoni. J. Opt. Soc. Am. A 13 , 2341 -2347. Kröger, R. H. H. and Gislén...

... have colour vision despite being described as cone monochromats. * Author for correspondence (e-mail: [email protected] ) 20 10 2005 © The Company of Biologists Limited 2006 2006 physiological optics chromatic aberration multifocal lens slit pupil evolution...