The invention provides an ophthalmic device and an ophthalmic treatment method, wherein the ophthalmic device and the ophthalmic treatment method can well test a tested cornea. The ophthalmic device comprises the components of a parallel projection optical system which projects parallel light to a tested eye, thereby forming a parallel index image on the cornea of the tested eye; a diffusion index projection optical system which is provided with a first diffusion projection optical system for forming a first diffusion index image and a second diffusion projection optical system for forming a second diffusion index image at an image height that is different from the image height of the first diffusion index image; an image photographing optical system which photographs the parallel index image, the first diffusion index image and the second diffusion index image; and a calculation part which calculates cornea shapes of the tested eye according to the index images that are photographed by the image photographing optical system and compares a first cornea shape based on the image height of at least one selected from the parallel index image and the first diffusion index image with a second cornea shape based on the image height of the second diffusion index image. Furthermore the tested result of the second cornea shape is corrected according to the comparison result.