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-42- Binocular Vision & A Novel New [Yet Again] Procedure for Correction of FIRST Quarter of 2011 Strabology Quarterly© Com pensatory Head Posture in Infantile Nystagm us: Augm ented Anderson Plus Volum e 26 (No.1) A M edical Scientific e-Periodical J. E. Bishop, M D Pages 37-42 REFERENCES 1. Kestenbaum, A.: Nouvelle operation du nystagmus, Bull Soc Ophthalmol Fr, 6:599, 1953. 2. Anderson, J.R.: Causes and treatment of congenital eccentric nystagmus, Br. J. Ophthalmol. 37:267, 1953. 3. Helveston, E.M.: Surgical Management of Strabismus: An Atlas of Strabismus th Surgery, 4 ed, Mosby, St Louis 1993, p. 543. 4. Dell'Osso, L.F., Hertle, R.W., Williams, R.W. and Jacobs, J.B.: A new surgery for congenital nystagmus: effects of tenotomy on an achiasmatic canine and the role of extraocular proprioception, J. APPOS. 3:166 - 182, 1999. 5. Hertle, R.W., Dongsheng, Y., Tai,Z., Carey, K. and Mitchell, E.: A systematic approach to eye muscle surgery for infantile nystagmus syndrome: results in 100 patients, Binoc Vis Strab Q. 25:72-93, 2010. 6. Parks, M.M.: Congenital nystagmus surgery, Am. Orthopt. J. 23:35, 1973. 7. Calhoun, J.H., and Harley, R.D.: Surgery for abnormal head position in congenital nystagmus, Trans. Am. Ophthalmol. Soc. 71:70, 1973. 8. Bietti, G.B.: Note di tecnica chirurgica oftalmologica. Boll d'oculist. 1956; 35:642-656. 9. Von Noorden, G.K. and Sprunger, D.T.: Large rectus muscle recessions for the treatment of congenital nystagmus, Arch Ophthalmol 109:221-224, 1991. 10. Helveston, E.M., Ellis, F.D., and Plager, D.A.: Large recession of the horizontal recti for treatment of nystagmus, Ophthalmology. 98: 1302-1305, 1991. 11. Hertle, R.W., Dell'Osso, L.F., FitzGibbon, E.J., Thompson, D., Yang, D. and Mellow, S.D.: Horizontal rectus tenotomy in patients with congenital nystagmus: results in 10 adults, Ophthalmology 110:2097-2105, 2003. 12. Hertle, R.W., Dell'Osso, L.F., FitzGibbon, E.J., Yang, D. and Mellow, S.D.: Horizontal rectus tenotomy in children with infantile nystagmus syndrome: a pilot study, J.AAPOS 8:539- 548, 2004
-43- Binocular Vision & Diagnosis and Surgical Treatm ent of Dissociated Horizontal Deviation Strabism us FIRST Quarter of 2011 Strabology Quarterly© S. Gam io, M D Volum e 26 (No.1) A M edical Scientific e-Periodical Pages 43-50 Original Scientific Article Diagnosis and Surgical Treatment of Dissociated Horizontal Deviation Strabismus SUSANA GAMIO, M.D. from the Ricardo Guitierrez Children’s Hospital, Buenos Aires, Argentina. ABSTRACT: Purpose: Obtaining satisfactory binocular alignment in patients with Dissociated Horizontal Deviation (DHD) requires a proper diagnosis and a specific surgical strategy. Clinical characteristics, surgical treatment and the results obtained in 20 patients with DHD are reported with a mean of 35 months postsurgical follow up. Patients and Methods: Retrospective record review of patients with DHD who underwent surgery between 2000 and 2007. Patient data were recorded, including age, sex, history of prior surgery, visual acuity, pre-operative angle with each eye fixing, Reversed Fixation Test (RFT) when available, type of operation performed, and final binocular alignment. Results: Twenty patients were identified, mean age 11.7 years old, all of them with age < 12 months at the time of strabismus onset. Ten of them had had prior surgery for congenital esotropia. Nine showed exotropia (XT), 9 esotropia (ET) and 2 had ET when fixing with OS and XT when fixing with OD. All of them also had an associated Dissociated Vertical Deviation (DVD). Seven patients had amblyopia in the non-dominant eye. Six patients underwent a single operation, 13 underwent 2 operations and 1 needed 3 surgeries to obtain satisfactory binocular alignment. Conclusions: Patients with DHD also exhibit bilateral and, very often, asymmetric DVD. Therefore, a surgical plan for both the horizontal and vertical dissociation drift of the eyes is needed. Bilateral surgery is almost always necessary, even in cases with a strong fixation preference, in order to obtain satisfactory binocular alignment. Received for consideration June 14, 2010; Accepted for publication July 6, 2010 <strong>Correspondence</strong>: email: susanagamio@gmail.com
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