Different types of Inferior Oblique Surgery - The Private Eye Clinic

12/14/2007Parks’ recessionIO anterior transpositionIRAVortex veinLRBcA – 8-10mm recessB- 14mm recessC- 6mm recess•Suturing IO with 1suture augmentsrecession and decreasetorsion•Neurovascular bundleacts as an origin andfunctional tetherIOAT• Park’s recession 8-10mm (c)Bilateral IOAT by Mims and Wood• Alan Scott IOAT (B)• Mims and Wood IOAT (A)OIRCBAI61 children after IOAT• 1 recurrent IOOA• 1 need for DVD surgery60 children withoutIOAT• 9 need for DVD surgery•Conclusion:- IOAT is effective for IOOA with lowincidence of need for reoperationprevention of DVD- IOAT is effective in reduction orA.Ziffer, S. Isenberg…The comparison of bilateral IOATand recession36 pts- bilateral IOAT• IO function -25*(n-35-4040*)• 14 pts- bilateral IOrecession• 10mm- IO function is31*• 14mm- IO function is38*•IOAT- significant weakening effect for IO- reduces upgaze•10mm recess more powerful than 14mm recessionR Muchnick, D.McCullough…Unilateral IOAT vs unilateral 14mmIO recession5 pts – IOAT• Mean reduction of HTin PP – 12 pd• Mean deviation in thefield of IO – 2 pdhypo (change 23 pd)• 4 units reduction inductions (+2.5 to -1.5)•Both procedures are effective•Both did not show overcorrection in PP4 pts- 14mm recess• Mean reduction of HTin PP – 11 pd• Mean deviation in thefield of IO – 3 pdhyper (change 22pd)• 3 units reduction inductions ( +3 to+0.5)2