Abstract
A purposeful transformation of periodic time dependencies as applied to the results from retinographic studies of retinal pathologies was carried out for studying their frequency properties. This study is intended to expand the space of formalized signs of pathologies that can be used in diagnostic systems that are based on artificial intelligence methods. A procedure for constructing the amplitude-frequency responses of the retina taking into account the mathematical description of impulse test stimuli has been developed. A procedure for polynomial approximation of the retina amplitude-frequency responses has been proposed, which allows the coefficients of approximating polynomials to be used as new formalized signs in diagnostics. It is shown that for complex retinal pathologies it is advisable to take into account not only its amplitude-frequency responses under different stimulation conditions, but also its phase-frequency characteristics by analyzing the retina loci on the complex plane. In searching for additional formalized signs of retinal pathologies, it is recommended to use a new generalized frequency response of the retina loci, which facilitates the search and formalization of additional signs of pathologies.
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