Citation:Anand K, Bharadwaj A, Dhiman S, Goel Y, Rastogi A, Agarwal R, Mishra M, Kumar P. Comparison of conventional and Hang-back methods of inferior oblique recession in V-pattern strabismus with inferior oblique overaction. Int J Ophthalmol 2020;13(6):985-990,doi:10.18240/ijo.2020.06.20
Comparison of conventional and Hang-back methods of inferior oblique recession in V-pattern strabismus with inferior oblique overaction
Received:July 14, 2019  Revised:November 21, 2019
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DOI:10.18240/ijo.2020.06.20
Key Words:V-pattern  inferior oblique overaction  Hang-back recession  conventional recession
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Kamlesh Anand Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
Ankita Bharadwaj Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
Shweta Dhiman Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
Yashpal Goel Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
Anju Rastogi Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
Richa Agarwal Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
Manisha Mishra Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
Prateek Kumar Department of Ophthalmology, Guru Nanak Eye Centre, Maulana Azad Medical College, New Delhi , India
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Abstract:
      AIM: To compare outcomes of conventional and Hang-back methods of inferior oblique (IO) recession in V-pattern strabismus with inferior oblique overaction (IOOA).

    METHODS: Comparative randomized study was conducted consisting of 50 patients, age 6 to 35y having V-pattern strabismus [>15 prism diopter (PD)] with IOOA. They were divided equally in two groups and underwent IO recession, group A by conventional method and group B by Hang-back method. Parameters evaluated were reduction in V-pattern and IOOA, shift in torsion, improvement in binocular status. Success was a residual V-pattern of less than 10 PD at 1y of follow up.

    RESULTS: The mean V-pattern preoperatively and postoperatively at 1y was 24±5.4 PD and 4.2±3.51 PD in group A and 23.44±6.44 PD and 5.76±3.8 PD in group B respectively. The mean reduction in V-pattern was 20±6.78 PD in group A and 18.2±5.48 PD in group B. The mean correction of IOOA was 18.48±3.13 PD in group A and 16±2.93 PD in group B. Mean shift in extorsion was 3.08±1.8 degree in group A and 3.72±2.14 degree in group B.

    CONCLUSION: Both the procedures achieve a significant and comparable reduction in V-pattern and IOOA. Hang-back recession being a landmark free surgery eliminates the need for intrascleral suturing thereby reducing the risk of scleral perforation with possible postoperative adjustment of muscle. It may be considered as a good alternative for IO recession in patients of V-pattern strabismus with mild to moderate amount of IOOA.

PMC FullText Html:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7270265/
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