dcsimg

    visual system

    • URI: http://purl.obolibrary.org/obo/UBERON_0000050
    • Definition: Simple eye that has two or more lenses. Some marine organisms bear more than one lens; for instance the copeopod Pontella has three. The outer has a parabolic surface, countering the effects of spherical aberration while allowing a sharp image to be formed. Copilla's eyes have two lenses, which move in and out like a telescope
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