A surgical retractor includes a first component and second component. The first component includes a first top structure and outer wall. The first top structure has a first opening and first peripheral opening disposed about the first opening, wherein the first peripheral opening in communication with the first opening. The outer wall forms a second opening in communication with the first opening. The second component includes a second top structure and inner wall. The second top structure has a third opening. The inner wall forms a fourth opening in communication with the third opening, wherein the inner wall has a second peripheral opening in communication with the fourth opening. The second component is adjustable with respect to the first component such that second and fourth openings define a combined opening in communication with the third opening and the combined opening is in communication with the first and second peripheral openings.
