case_images: PMC11730868_01
case_images: The preoperative photo for Patient 1 (Case 1) (left: mouth closing, right: full mouth opening). Ptosis of the left eye and closure of the left eyelid was observed during full mouth opening.
case_images: ICRP_A_2451633_F0001_C.jpg
case_images: PMC11730868_01_ICRP_A_2451633_F0001_C.jpg
case_images: F0001
case_images: During full mouth opening, the MRD-1 in the left eye decreased to 1 mm, and the MRD-2 decreased to 1.5 mm (Figure 1).
case_images: The three parts of the left eye orbicularis oculi muscle (orbital, preseptal, and pretarsal). The pretarsal and preseptal orbicularis oculi muscles of the upper eyelid and the preseptal orbicularis oculi muscle on the outer side of the lower eyelid were partially excised (area surrounded by the dotted line).
case_images: ICRP_A_2451633_F0002_B.jpg
case_images: PMC11730868_02_ICRP_A_2451633_F0002_B.jpg
case_images: F0002
case_images: In addition, as part of the treatment for MAS, the OOM was excised, as in Case 1 (Figure 2).
case_images: The postoperative photo for Patient 1 (Case 1) (left: mouth closing, right: full mouth opening). Ptosis of the left eye improved (left), and no eyelid closure of the left eye was observed during full mouth opening (right).
case_images: ICRP_A_2451633_F0003_C.jpg
case_images: PMC11730868_01_ICRP_A_2451633_F0003_C.jpg
case_images: F0003
case_images: At the 6-month follow-up, the patient was very satisfied with the surgical results, the MRD-1 in the left eye had improved from 1.5 mm to 2.5 mm, and changes in the MRD-1 and MRD-2 during mouth opening had disappeared, indicating improvement in MAS (Figure 3).
case_images: PMC11730868_02
case_images: The three parts of the left eye orbicularis oculi muscle (orbital, preseptal, and pretarsal). The pretarsal and preseptal orbicularis oculi muscles of the upper eyelid and the preseptal orbicularis oculi muscle on the outer side of the lower eyelid were partially excised (area surrounded by the dotted line).
case_images: ICRP_A_2451633_F0002_B.jpg
case_images: PMC11730868_02_ICRP_A_2451633_F0002_B.jpg
case_images: F0002
case_images: In addition, as part of the treatment for MAS, the OOM was excised, as in Case 1 (Figure 2).
case_images: The preoperative photo for Patient 2 (Case2) (left: mouth closing, right: full mouth opening). Ptosis of the left eye and closure of the left eyelid was observed during full mouth opening.
case_images: ICRP_A_2451633_F0004_C.jpg
case_images: PMC11730868_02_ICRP_A_2451633_F0004_C.jpg
case_images: F0004
case_images: During mouth opening, MRD-1 in the left eye decreased to 0 mm and MRD-2 decreased to 1 mm (Figure 4).
case_images: The postoperative photo for Patient 2 (Case 2) (left: mouth closing, middle: partial mouth opening, right: full mouth opening). Ptosis of the left eye improved (left). No eyelid closure was observed during partial mouth opening (Middle). Eyelid closure was observed during full mouth opening (right).
case_images: ICRP_A_2451633_F0005_C.jpg
case_images: PMC11730868_02_ICRP_A_2451633_F0005_C.jpg
case_images: F0005
case_images: At full mouth opening, MRD-1 and MRD-2 decreased slightly to 1.5 mm and 2 mm, respectively (Figure 5).