aphakic space

aphakic space
the space in the pupil which is not occupied by the lens. The space may be circumlenticular, around the lens as in Stomias, ventral as in Omosudidae, some Myctophidae and Paralepidae, or rostral as in Scopelosauridae. A rostral aphakic space may enhance the forward binocular field of vision

Dictionary of ichthyology. 2009.

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