A three-dimensional projection apparatus comprising: a display including a display surface having a plurality of subpixels arranged in a grid along a first direction and a second direction orthogonal to the first direction; an optical element configured to define a light beam direction of an image light emitted from the subpixels for each strip-shaped region of a plurality of strip-shaped regions extending in the second direction on the display surface ; and an optical member configured to project the image light, the light beam direction of which is defined by the optical element , so that a virtual image of the display surface is formed; wherein the three-dimensional projection apparatus further comprises a controller configured to acquire information related to a position of an eye of a subject and to correct, in accordance with the position of the eye, the optical element and an image to be displayed by the display surface , wherein the controller is configured to correct a first image, to be made visible to a first eye of the subject , based on first correction information corresponding to a position of the first eye and to correct a second image, to be made visible to a second eye of the subject, based on second correction information corresponding to a position of the second eye, wherein the first and second correction information is information used to correct distortion of the shape of the virtual image in accordance with the position of the first and second eyes of the subject , wherein the controller is configured to correct the optical element based on third correction information generated using the first correction information, the second correction information, and a weighting factor, and wherein the weighting factor allows the subject to perceive the least amount of distortion in the virtual image which differs depending on the video composition ratio of a dominant eye and a non-dominant eye of the subject . a display including a display surface having a plurality of subpixels arranged in a grid along a first direction and a second direction orthogonal to the first direction; an optical element configured to define a light beam direction of an image light emitted from the subpixels for each strip-shaped region of a plurality of strip-shaped regions extending in the second direction on the display surface ; and an optical member configured to project the image light, the light beam direction of which is defined by the optical element , so that a virtual image of the display surface is formed; wherein the three-dimensional projection apparatus further comprises a controller configured to acquire information related to a position of an eye of a subject and to correct, in accordance with the position of the eye, the optical element and an image to be displayed by the display surface , wherein the controller is configured to correct a first image, to be made visible to a first eye of the subject , based on first correction information corresponding to a position of the first eye and to correct a second image, to be made visible to a second eye of the subject, based on second correction information corresponding to a position of the second eye, wherein the first and second correction information is information used to correct distortion of the shape of the virtual image in accordance with the position of the first and second eyes of the subject , wherein the controller is configured to correct the optical element based on third correction information generated using the first correction information, the second correction information, and a weighting factor, and wherein the weighting factor allows the subject to perceive the least amount of distortion in the virtual image which differs depending on the video composition ratio of a dominant eye and a non-dominant eye of the subject . <EOS>