Long Term Surgical Outcome of Large Angle Exotropia Using Hang Back Procedure

Dr. Nasimul Gani Chowdhury, Dr. Afrina Khanam, Dr. Homayon Kabir, Dr. Farzana Akter Chowdhury and Dr. Tasmin Akter
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Dr. Nasimul Gani Chowdhury: Chief Consultant, Chittagong Eye Infirmary & Training Complex (CEITC), Chattogram, Bangladesh
Dr. Afrina Khanam: Resident, Institute of Community Ophthalmology (ICO), Chittagong Eye Infirmary & Training Complex campus, Chattogram, Bangladesh
Dr. Homayon Kabir: Long-term Fellow (Pediatric Ophthalmology), Chittagong Eye Infirmary & Training Complex (CEITC), Chattogram, Bangladesh
Dr. Farzana Akter Chowdhury: Consultant, Chittagong Eye Infirmary & Training Complex (CEITC), Chattogram, Bangladesh
Dr. Tasmin Akter: Assistant Surgeon, Chittagong Eye Infirmary & Training Complex (CEITC), Chattogram, Bangladesh

International Journal of Research and Scientific Innovation, 2025, vol. 12, issue 15, 241-245

Abstract: Purpose: To determine the long-term surgical outcome of large angle exotropia using Hang back procedure in children. Methods: 40 eyes of 20 exotropia patients underwent bilateral lateral rectus muscles recession using Hang-back procedure were retrospectively reviewed. Age range of the patients were 12-16 years, and mean age was 14±0.5 years. Distant exotropia was targeted for surgical correction. Pre-operative and post-operative orthoptic assessment, cycloplegic refraction and fundoscopy were done. All patients underwent bilateral lateral rectus muscles recession (BLR) with Hang back procedure and were reviewed 1 week, 4 weeks, 3 months and 6 months interval. Results: Out of 20 patients, 8 (40%) were male and 12 (60%) were female. Pre-operative distant deviations were 40-50PD exotropia. Post-operatively satisfactory alignments were obtained in patients having 40 PD and 45PD exotropia at final follow up. Remaining 2 patients having 50PD exotropia showed 10PD exotropia at final follow up. Conclusion: Hang back technique is a simple, safe and effective procedure for bilateral lateral rectus muscle recession in large angle exotropia in children.

Date: 2025
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