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The CAGE-Barten eye model provides a tool for evaluating the neural image perceived by the retina-brain system. The procedure is derived from a holistic approach to the modeling of the optical and neural aspects of the visual process. The optical and psychophysical descriptions of vision are unified under a single model, whose complexity incorporates a number of physical processes and parameters, and whose robustness allows the prediction of the most relevant experimental signatures of human vision. Returning to the technological parallel with a photocamera, it can be said that while the optical CAGE eye model represents the equivalent of a data sheet for the objective lens, the joint CAGE-Barten model unveils the acquisition properties of the photosensor matrix, together with the filtering and compression algorithms of the electronic processing board. Alternatively, it can also be said that the gap between diopters of refractive error and lines of VA is bridged.
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