The outcome of Hang-Back Sutures Technique in Horizontal Strabismus Surgery
Keywords:Strabismus, Horizontal, Esotropia, Exotropia , Ophthalmologist
AbstractObjective The objective of the current study was to assess outcome of hang back sutures in horizontal strabismus with the reference to specific type of surgery known as postoperative alignment. Study Design: Retrospective Observational type. Place and Duration of study: Conducted in Lahore General Hospital and Mayo Hospital, Lahore from June 2006 to Feb 2018. Methods Patients with horizontal strabismus were recruited. Clinical assessment included cycloplegic refraction, best corrected visual acuity and routine assessment for squint. Those having coexisting ocular or neurological problems, previously squint surgery, A/V pattern or vertical deviation were excluded. All underwent recession by hang-back method using absorbable suture. Preoperative and postoperative deviation was measured in terms of degree on 1st day, 3rd month and at 6th month. Results Out of 64 patients, 66% were females while 34% were males with mean age of 14.22 years (SD 7.88). Amongst them 62 % had surgery for exotropia and 38 % for esotropia. All underwent unilateral (86%) and bilateral (14%) recession/resection procedure. Range of preoperative deviation was between 10 - 45 degrees (20-90PD) with mean of 20.86 degrees (SD 8.6) and postoperatively improved to 0-15 degree (0-30PD) with mean 1.91 degree (SD 3.77). 78% cases were straight or deviation less than or equal to 5 degree (10PD) on 1st postoperative day, at 3rd month as well as at 6th month. Out of 64 patients, 3% required readjustment of sutures and 3% needed revision surgery on the other eye. Conclusion We conclude that hang-back technique is simple and safe method for rectus muscle recession.
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