BACKGROUND/AIMS: Graded vertical rectus tenotomy (GVRT) is postulated as effective for small-angle vertical heterotropia. We aimed to determine the dosing recommendations for GVRT in @entity735 ( @entity735 ). METHODS: This was a retrospective, observational study of surgical outcomes for GVRT from 2009 to 2014 in a single surgeon's academic practice. There were 37 (20 @entity1 ) @entity1 of average age 68  10 (SD) years with comitant or incomitant @entity15170  <=10   caused by @entity735 . The main outcome measure was the dose-effect of GVRT required to correct intraoperative @entity15170 . RESULTS: Preoperative average central gaze @entity15170 measured 4.7  2.2  . Three @entity1 underwent repeat GVRT for residual or consecutive @entity15170 , one undergoing it twice. All surgeries were analysed, increasing the total operations to 41. The @entity735 was operated in 32 eyes, and the superior @entity735 . Mean tenotomy was 68  19% of tendon width. @entity15170 was always eliminated intraoperatively by progressive GVRT. Mean @entity15170 was 1.1  1.6   at average 93   days postoperatively. Linear regression demonstrated that 3-6   @entity15170 correction requires 30%-90% graded tenotomy (R(2)=0.32, p<0.0001), but with substantial individual variability. Undercorrection necessitated reoperation in 10% of cases. CONCLUSION: GVRT precisely corrects @entity15170 of up to 10  , but because of variable effect, it should be performed with intraoperative monitoring under topical anaesthesia.

Graded vertical rectus tenotomy for small-angle cyclovertical strabismus in XXXX .

@entity1 :: ('9606', 'Species') :: ['women', 'patients'] @entity735 :: ('MESH:D005124', 'Disease') :: ['rectus tendon in the hypertropic eye in 9 eyes', 'sagging eye syndrome', 'inferior rectus tendon in the hypotropic eye', 'SES'] @entity15170 :: ('MESH:D013285', 'Disease') :: ['Hypertropia', 'hypertropia']
@entity735 :: (MESH:D005124,Disease) :: ['sagging eye syndrome']
