Beer, T (1897). Die Akkommdation des Cephalopodenauges. Pflugers Arch 67, 541-.
Budelmann, B. U. and Young, J. Z (1993). The oculomotor system of decapod cephalopods: eye muscles, eye muscle nerves and the oculomotor neurons in the central nervous system. Phil Trans. R. Soc. Lond. B 340, 93-.[Medline]
Harkness, L (1977). Chameleons use accommodation to judge distance. Nature 267, 346-.[Medline]
Howland, H. C (1985). Optics of photoretinoscopy: results from ray tracing. Am. J. Optom. Physiol. Opt 62, 621-.[Medline]
Hueter, R. E. and Gruber, S. H (1980). Retinoscopy of aquatic eyes. Vision Res 20, 197-.[Medline]
Levy, B. and Sivak, J. G (1980). Mechanisms of accommodation in the bird eye. J. Comp. Physiol 137, 267-.
Muntz, W. R. and Gwyther, J (1988). Visual acuity in Octopuspallidus and Octopus australis. J. Exp. Biol 134, 119-.[Abstract/Free Full Text]
Muntz, W. R. A. and Gwyther, J (1989). The visual acuity of octopuses for gratings of different orientations. J. Exp. Biol 142, 461-.[Free Full Text]
Packard, A (1972). Cephalopods and fish: the limits of convergence. Biol. Rev 47, 265-.
Reymond, L (1985). Spatial acuity of the eagle Aquila audax : abehavioral, optical amd anatomical investigation. Vision Res 25, 1477-.[Medline]
Sivak, J. G (1991). Shape and focal properties of the cephalopod ocular lens. Can. J. Zool 69, 2501-.
Sivak, J. G. and Howland, H. C (1973). Accommodation in the Northern Rock Bass ( Ambioplites rupestris rupestris ) in response to natural stimuli. Vision Res 13, 2059-.[Medline]
