NOVELTY - Consolidated multilayered gradient refractive index (GRIN) optical material comprises a multilayered composite GRIN sheet including consolidated coextruded multilayered polymer films, where each of the multilayered polymer films includes at least two alternating layers (A) and (B) (I), and the GRIN sheet has an external optical transmission of at least 80% at a wavelength of 633 nm measured using an ultraviolet-visible (UV-Vis) spectroscopy and is free of intralayer polymer domains of at least 1 micron size scale in any dimension.    USE - The consolidated multilayered GRIN optical material is useful for producing a GRIN lens (claimed), which is useful in: imaging applications, such as small camera, camera phones, surveillance cameras, medical imaging tools (e.g., endoscopes), and military imaging (e.g., scopes, space cameras); non-image forming systems, such as energy collection devices, solar cells, solar collectors, solar concentrators, beam shaping devices; and biological implants such as synthetic copies of human lenses to produce implantable devices for human or animal vision.    ADVANTAGE - The composition efficiently produces improved, aberration free optical lenses or elements capable of high transmission or low scattering required for imaging technologies.    DETAILED DESCRIPTION - Consolidated multilayered gradient refractive index (GRIN) optical material comprises a multilayered composite GRIN sheet including a consolidated coextruded multilayered polymer films, where: each of the multilayered polymer films includes at least two alternating layers (A) and (B) having a structure of formula ((AB)x) (I); the layer (A) includes a first blend of polymer components; the layer (B) includes a second blend of polymer components; and the multilayered composite GRIN sheet has an external optical transmission of at least 80% at a wavelength of 633 nm measured using an ultraviolet-visible (UV-Vis) spectroscopy and is free of intralayer polymer domains of at least 1 micron size scale in any dimension.    x = 2n;    n = 4-18;    A = first blend of polymer components; and    B = second blend of polymer components.    An INDEPENDENT CLAIM is included for a method of fabricating the GRIN lens, comprising extruding a first polymer blend and a second polymer blend to form a multilayered polymer composite film, each of the multilayered polymer films including (I) and shaping the multilayered composite GRIN sheet into a GRIN lens.