The memristor has shown great promise as a circuit component with which nonlinear biological systems may be modeled. While some researchers have undertaken the challenge of producing memristive circuits that mimic biological neurons, there exists a lack of established memristive circuitry for pupillary modeling. This paper proposes a new model that mimics the eye’s responses to light intensity fluctuations by means of a voltage-controlled memristive circuit. The proposed model displays promising results when compared with the properties exhibited by biological pupillograms.