The presented research concerns 11-year-old Greek students’ mental representations of the mechanisms of vision in conditions of natural and artificial light, as well as the persistence of those representations in terms of the two different states of lighting and the expression form of the provided answers (oral speech; sketches). The study consisted of two phases: test interviews and an interview process, where personal interviews were conducted with 30 participants. The results showed that the 11-year-old pupils employed the majority of the vision schemes that are included in the international bibliography; however, they tended to use the Sea of Light mechanism and a new scheme the researchers called Illumination of the Object. The schemes employed, however, are not consistent, either throughout the different states of lighting, or in the 3-D and 2-D world.