Duane retraction syndrome surgery

The eyeball regression syndrome is an eye disease caused by abnormal congenital innervation or extraocular muscle fibrosis. Clinical manifestations are classified into 3 types. Type I is more common, the external rotation is obviously limited or can not be externally turned, the rupture is enlarged when the external rotation is turned; the internal rotation is normal or mildly restricted, accompanied by the retreat of the eyeball and the narrowing of the cleft palate. Type II is that the internal rotation is obviously restricted or completely incapable of rotation, the external slant of the eye, the external rotation is normal or mildly restricted, and the eyeball retreats and the cleft palate becomes narrow during the internal rotation. Type III is limited for both internal and external rotation. When the internal rotation is reversed, the eyeball retreats and the cleft palate becomes narrower. The first eye position can be positive or internal and external, and can be combined with AV sign, X sign and other congenital anomalies. Treating diseases: strabismus Indication Duane Eye Retreat Syndrome Surgery applies to: 1. The first eye position is skewed. 2. Compensating for serious heads. 3. The upper and lower skewers appear when the eyeball turns inward. 4. Eyeballs are severely retreated. Contraindications 1. The first eye position has no obvious skew. 2. No head abnormalities. Preoperative preparation In addition to ophthalmic system examination, EMG or SEM should be used to detect the abnormality of the extraocular muscles, and to measure the degree of eye movement limitation, the degree of retraction, and the size of the cleft palate. The results were typed and a surgical plan was designed. Surgical procedure Horizontal rectus surgery: 1. The first eye position is obliquely single eye (internal oblique <20°) or both eyes (internal oblique >20°). Jensen coupling can also be used to correct the internal oblique, either alone or in combination. Disable the rectus abdominis shortening, because the shortening of the lateral rectus muscle can aggravate the eyeball back. 2. The first eye position is externally inclined and the lateral lateral rectus muscle is post-migration. If the external oblique is >25°, bilateral external rectus muscle migration should be performed. 3. The upper or lower side of the eyeball is deflected by the internal and external rectus muscles after the fixation, if necessary, after appropriate migration; or the lateral rectus muscle combined with fibrosis of the external rectus "Y" suture Surgery, the external rectus muscles are divided into upper and lower halves, about 10mm long, and are "Y"-shaped re-sewed on the sclera after being disconnected from the end.