A dissection device for corneal transplants, comprising: a housing including a contact side (100 a) configured to be positioned against a cornea, the housing including an interior passageway with an opening at the contact side (100 a); a blade assembly disposed in the interior passageway of the housing, the blade assembly including a first blade and a second blade, the first blade including a first cutting edge, the second blade including a second cutting edge, the first blade and the second blade being movable relative to the housing such that the first cutting edge and the second cutting edge are configured to extend past the opening of the housing and out of the interior passageway, wherein the first cutting edge is configured to produce a first cut in the cornea disposed at the contact side (100 a) and the second cutting edge is configured to produce a second cut in the cornea, the first cut and the second cut defining a volume of tissue for removal from the cornea; and one or more manipulators configured to move the first blade and the second blade relative to the housing, characterized by: the first cutting edge and the second cutting edge are substantially circular; the substantially circular first cutting edge is concentric with the substantially circular second cutting edge, and the substantially circular first cutting edge has a first diameter that is larger than a second diameter of the second cutting edge; and the second cutting edge is configured to extend past the opening of the housing by a larger distance than the first cutting edge, the second cut extending to a second depth into the cornea that is larger than a first depth of the first cut into the cornea based on the larger distance. a housing including a contact side (100 a) configured to be positioned against a cornea, the housing including an interior passageway with an opening at the contact side (100 a); a blade assembly disposed in the interior passageway of the housing, the blade assembly including a first blade and a second blade, the first blade including a first cutting edge, the second blade including a second cutting edge, the first blade and the second blade being movable relative to the housing such that the first cutting edge and the second cutting edge are configured to extend past the opening of the housing and out of the interior passageway, wherein the first cutting edge is configured to produce a first cut in the cornea disposed at the contact side (100 a) and the second cutting edge is configured to produce a second cut in the cornea, the first cut and the second cut defining a volume of tissue for removal from the cornea; and one or more manipulators configured to move the first blade and the second blade relative to the housing, characterized by: the first cutting edge and the second cutting edge are substantially circular; the substantially circular first cutting edge is concentric with the substantially circular second cutting edge, and the substantially circular first cutting edge has a first diameter that is larger than a second diameter of the second cutting edge; and the second cutting edge is configured to extend past the opening of the housing by a larger distance than the first cutting edge, the second cut extending to a second depth into the cornea that is larger than a first depth of the first cut into the cornea based on the larger distance. the first cutting edge and the second cutting edge are substantially circular; the substantially circular first cutting edge is concentric with the substantially circular second cutting edge, and the substantially circular first cutting edge has a first diameter that is larger than a second diameter of the second cutting edge; and the second cutting edge is configured to extend past the opening of the housing by a larger distance than the first cutting edge, the second cut extending to a second depth into the cornea that is larger than a first depth of the first cut into the cornea based on the larger distance.