case_images: PMC5525600_01
case_images: Preoperative primary position of case 1. Marked left hypotropia was noted
case_images: TJO-7-48-g001.jpg
case_images: PMC5525600_01_TJO-7-48-g001.jpg
case_images: F1
case_images: For the eye position, there was significant left hypotropia at primary position which measured 40 prism diopters when the patient fixed at far target [Figure 1].
case_images: Preoperative extraocular muscle of case 1. There was overaction of the left inferior rectus and no underaction of the other muscles
case_images: TJO-7-48-g002.jpg
case_images: PMC5525600_01_TJO-7-48-g002.jpg
case_images: F2
case_images: The duction test showed no limitations in all directions in both eyes, but the version test showed overacting left inferior rectus (LIR) muscle [Figure 2].
case_images: Primary position of case 1 after muscle operation for 3 months. The eyes were orthophoric and there was no left lower lid retraction
case_images: TJO-7-48-g003.jpg
case_images: PMC5525600_01_TJO-7-48-g003.jpg
case_images: F3
case_images: Three months after the muscle operation, the eyes were orthophoric at primary position [Figure 3] and the EOM was full and free in all directions [Figure 4] and there was no left lower lid retraction.
case_images: Extraocular muscle of case 1 after muscle operation for 3 months. The eye movement was full and free in all directions
case_images: TJO-7-48-g004.jpg
case_images: PMC5525600_01_TJO-7-48-g004.jpg
case_images: F4
case_images: Three months after the muscle operation, the eyes were orthophoric at primary position [Figure 3] and the EOM was full and free in all directions [Figure 4] and there was no left lower lid retraction.
case_images: PMC5525600_02
case_images: Preoperative primary position of case 2. Marked left hypotropia was noted
case_images: TJO-7-48-g005.jpg
case_images: PMC5525600_02_TJO-7-48-g005.jpg
case_images: F5
case_images: The primary position of eyes showed marked left hypotropia [Figure 5].
case_images: Preoperative extraocular muscle of case 2. There was overaction of the left inferior rectus and elevation deficit of the left eye
case_images: TJO-7-48-g006.jpg
case_images: PMC5525600_02_TJO-7-48-g006.jpg
case_images: F6
case_images: For the EOM examination, there existed -2 limitation of supraduction in his left eye and +2 overaction of the LIR [Figure 6].
case_images: Primary position of case 2 after muscle operation for 6 months. The eyes were orthophoric and there was mild left lower lid retraction
case_images: TJO-7-48-g007.jpg
case_images: PMC5525600_02_TJO-7-48-g007.jpg
case_images: F7
case_images: Six months later, the eyes were orthophoric at primary position and there showed mild left lower lid retraction [Figure 7]; otherwise, the patient was satisfied with the result [Figure 8].
case_images: Extraocular muscle of case 2 after muscle operation for 6 months. The eye movement was full and free in all directions
case_images: TJO-7-48-g008.jpg
case_images: PMC5525600_02_TJO-7-48-g008.jpg
case_images: F8
case_images: Six months later, the eyes were orthophoric at primary position and there showed mild left lower lid retraction [Figure 7]; otherwise, the patient was satisfied with the result [Figure 8].