A method for testing the vision of an individual wearing a piece of vision-correcting ophthalmic equipment, said method including the following steps: a) placing said individual at a predetermined observation distance from a displaying area, at which said individual observes, with a natural cephalic carriage, said displaying area, b) displaying, on said displaying area, a visual test comprising at least one test image, c) determining, in said displaying area, a border of zones of optimal/degraded vision of said test image by the individual in the configuration resulting from steps a) and b), said border respectively bounding, in a visual field of said individual equipped with said piece of ophthalmic equipment, a zone of optimal vision and a zone of degraded vision of said visual field, for which zones said individual indicates whether he respectively sees optimally or degradedly said test image of the visual test through said piece of vision-correcting ophthalmic equipment, and d) recording a border indicator representative of said border of zones of optimal/degraded vision, wherein: - steps a) to d) are executed at least a first time, with an individual equipped with a first piece of vision-correcting ophthalmic equipment, to determine a first border and to record a first border indicator, - the individual, actually or virtually being equipped with a second piece of vision-correcting ophthalmic equipment that is different from said first piece of ophthalmic equipment, a second border of zones of optimal/degraded vision of said test image by said individual is determined in said displaying area in the configuration resulting from steps a) and b), said second border respectively bounding a second zone of optimal vision and a second zone of degraded vision of said visual field, for which zones said individual actually or virtually equipped with said second piece of ophthalmic equipment indicates or is assumed to respectively see optimally or degradedly said test image of the visual test, - a second border indicator representative of said second border of zones of optimal/degraded vision is recorded, - said first border indicator and said second border indicator are compared, and - from the preceding comparison an optical performance of the individual under the observation conditions of steps a) and b) is deduced. a) placing said individual at a predetermined observation distance from a displaying area, at which said individual observes, with a natural cephalic carriage, said displaying area, b) displaying, on said displaying area, a visual test comprising at least one test image, c) determining, in said displaying area, a border of zones of optimal/degraded vision of said test image by the individual in the configuration resulting from steps a) and b), said border respectively bounding, in a visual field of said individual equipped with said piece of ophthalmic equipment, a zone of optimal vision and a zone of degraded vision of said visual field, for which zones said individual indicates whether he respectively sees optimally or degradedly said test image of the visual test through said piece of vision-correcting ophthalmic equipment, and d) recording a border indicator representative of said border of zones of optimal/degraded vision, - steps a) to d) are executed at least a first time, with an individual equipped with a first piece of vision-correcting ophthalmic equipment, to determine a first border and to record a first border indicator, - the individual, actually or virtually being equipped with a second piece of vision-correcting ophthalmic equipment that is different from said first piece of ophthalmic equipment, a second border of zones of optimal/degraded vision of said test image by said individual is determined in said displaying area in the configuration resulting from steps a) and b), said second border respectively bounding a second zone of optimal vision and a second zone of degraded vision of said visual field, for which zones said individual actually or virtually equipped with said second piece of ophthalmic equipment indicates or is assumed to respectively see optimally or degradedly said test image of the visual test, - a second border indicator representative of said second border of zones of optimal/degraded vision is recorded, - said first border indicator and said second border indicator are compared, and - from the preceding comparison an optical performance of the individual under the observation conditions of steps a) and b) is deduced.