{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T23:48:38Z","timestamp":1793317718682,"version":"4.5.0"},"reference-count":20,"publisher":"SLACK, Inc.","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Pediatr Ophthalmol Strabismus"],"published-print":{"date-parts":[[2019,3,19]]},"abstract":"<jats:sec>\n            <jats:title>Purpose:<\/jats:title>\n            <jats:p>To evaluate pattern collapse and torsional changes following vertical transposition of horizontal recti in patients with V-pattern exotropia and no oblique dysfunction.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods:<\/jats:title>\n            <jats:p>A prospective study was performed on patients who had V-pattern exotropia and no oblique dysfunction. Lateral recti were transposed upward half-tendon width in V-pattern of 25 prism diopters (PD) or less (n = 14) and full-tendon width in V-pattern of greater than 25 PD (n = 10). Amblyopic patients had unilateral lateral rectus recession with upward transposition and medial rectus resection with downward transposition (n = 8). Ductions, versions, pattern strabismus, disc foveal angle, and astigmatic axis were analyzed before and 6 months after surgery.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results:<\/jats:title>\n            <jats:p>\n              In the 32 patients (21 females), the mean age was 8.25 \u00b1 1.23 years. Only amblyopic patients showed preoperative fundus extorsion (mean disc foveal angle = 16.9\u00b0,\n              <jats:italic>P<\/jats:italic>\n              &lt; .01). Mean pattern collapse was 13.1 \u00b1 3.8 PD with half-tendon transposition, 35.6 \u00b1 13.7 PD with full-tendon transposition, and 13.8 \u00b1 7.9 PD in the unilateral group. Pattern collapse increased gradually so that pattern normalization occurred after 6 months in most patients. There was a statistically significant correlation between the preoperative V-pattern and the magnitude of pattern collapse after surgery (\n              <jats:italic>r<\/jats:italic>\n              = 0.80,\n              <jats:italic>P<\/jats:italic>\n              &lt; .01). There were no significant changes in the mean disc foveal angle (&lt; 0.5\u00b0) or axis of astigmatism (&lt; 0.5\u00b0) in all three groups.\n            <\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions:<\/jats:title>\n            <jats:p>Vertical transposition of horizontal muscles can correct V-pattern exotropia, although the effect might not be immediate. Torsional changes are minimal. Amblyopic patients with V-pattern exotropia showed a preoperative extorsion that did not change after surgery.<\/jats:p>\n            <jats:p>\n              <jats:bold>\n                [\n                <jats:italic>J Pediatr Ophthalmol Strabismus<\/jats:italic>\n                . 2019;56(2):107\u2013115.]\n              <\/jats:bold>\n            <\/jats:p>\n          <\/jats:sec>","DOI":"10.3928\/01913913-20190205-03","type":"journal-article","created":{"date-parts":[[2019,3,19]],"date-time":"2019-03-19T19:18:59Z","timestamp":1553023139000},"page":"107-115","source":"Crossref","is-referenced-by-count":9,"title":["Torsional Changes After Vertical Transposition of Horizontal Recti in V-pattern Exotropia Without Oblique Dysfunction"],"prefix":"10.3928","volume":"56","author":[{"given":"Sara","family":"Maher","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dina","family":"El-Fayoumi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ahmed","family":"Awadein","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lobna","family":"Khazbak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2308","reference":[{"key":"e_1_3_1_2_2","first-page":"324","article-title":"Bilateral superior oblique tenectomy in A-pattern exotropia","volume":"67","author":"Harley RD","year":"1969","unstructured":"Harley RD, Manley DR. 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