The invention concerns a method for determining a light filter for a spectacle lens for improving or maintaining the visual comfort of an individual wearing spectacles, comprising the steps: a) collecting data relating to the needs or uses of the individual； b1) selecting a test filter on the basis of a predefined criterion； b2) selecting, as a function of the collected data, a luminous scene comprising an image determined as a function of the needs or uses, and a light source generating a visual discomfort for the individual not equipped with a filter； c) placing of the individual by presenting him with the luminous scene through the test filter； d) evaluating said criterion； e) comparing the result with a predetermined threshold； f) determining the suitable light filter as a function of the result. The invention also concerns a display device and a virtual reality helmet designed for said method.
