Vision screening device and cylinder structure of vision screening camera

The invention discloses a vision screening device and a cylinder structure of a vision screening camera, the cylinder structure comprises a shell, the inner surface of the shell is a black material layer, and the vision screening camera is installed in the shell; the shell is provided with the light source irradiation hole assembly communicated with the interior of the shell, and the light source irradiation hole assembly is used for providing a light source for the main view of a user to the interior of the shell. The black material layer is arranged on the inner surface of the shell, and the vision screening camera is installed in the shell, so that the vision screening camera is located in a black environment, a darkroom environment is simulated, the requirement for the external environment can be lowered, and the application range is enlarged; a light source for watching can be provided for the user through the light source irradiation hole assembly, so that the vision screening camera can capture the vis