A) An overview of the superior level of the orbital cavity. The instruments are passed under the two divisions of m. rectus superior lying symmetrically on both sides of m. levator palpebrae superioris; B) M. obliquus superior is visualized medially to the medial division of m. rectus superior along with the trochlear nerve entering the muscle body in its posterior aspect; C) M. levator palpebrae is transected and no muscle fibers were found in its inferior aspect; Annotations: 1. nervus frontalis; 2. m. levator palpebrae superioris; 3. m. obliquus superior; 4. lateral division of m. rectus superior; 5. medial division of m. rectus superior; 6. n. trochlearis; * n. occulomotorius - superior branch.