title: Bilateral lateral rectus muscle recession for the convergence insufficiency type of intermittent exotropia.
abstract: To evaluate the surgical efficacy of bilateral lateral rectus recession (BLRR) for intermittent exotropia with convergence insufficiency (CI-type X[T]).
  
  
  
  The medical records of patients with CI-type X(T) who underwent BLRR on adjustable suture from January 2011 to March 2014 were retrospectively reviewed. Ocular alignment and sensory status were evaluated pre- and postoperatively for each patient. The mean distance and mean near deviation, before and after surgery, as well as the mean near-distance difference, were compared. Success was defined as postoperative alignment of esophoria/tropia of ≤5(Δ) and exophoria/tropia of ≤8(Δ) at distance.
  
  
  
  A total of 25 patients were included. The mean exodeviation was significantly reduced, from 32.5(Δ) preoperatively to 0.08(Δ) postoperatively (P < 0.001) at distance and from 45(Δ) preoperatively to 2.4(Δ) (P < 0.001) postoperatively at near. The mean near-distance difference was reduced from 16(Δ) preoperatively to 2(Δ) postoperatively (P < 0.01). Of the 25 patients, 21 (84%) obtained successful motor alignment, 2 had recurrent exodeviation of ≥10(Δ) at distance, and 2 had overcorrected esotropia with deviation angles of >8(Δ).
  
  
  
  In this cohort of patients, bilateral lateral rectus recession using an adjustable suture technique successfully treated CI-type X(T).
authors.affiliation: Tianjin Eye Hospital, Tianjin Eye Institute, Tianjin Medical University, Tianjin, People's Republic of China; Ophthalmologic Department, Fuyang People's Hospital, Fuyang, Anhui Province, People's Republic of China.
authors.forename: Ling
authors.initials: L
authors.lastname: Ma
authors.affiliation: Tianjin Eye Hospital, Tianjin Eye Institute, Tianjin Medical University, Tianjin, People's Republic of China.
authors.forename: Likun
authors.initials: L
authors.lastname: Yang
authors.affiliation: Tianjin Eye Hospital, Tianjin Eye Institute, Tianjin Medical University, Tianjin, People's Republic of China; Ophthalmologic Department, Beijing Children Hospital, Capital Medical University, Beijing, People's Republic of China. Electronic address: lnd68@yahoo.com.
authors.forename: Ningdong
authors.initials: N
authors.lastname: Li
mesh_terms: D000293:Adolescent; D002648:Child; D003290:Convergence, Ocular / Q000502:physiology; D004948:Esotropia / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D015835:Ocular Motility Disorders / Q000503:physiopathology / Q000601:surgery*; D009801:Oculomotor Muscles / Q000503:physiopathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures; D012189:Retrospective Studies; D013536:Suture Techniques; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology