Binocularity in Comitant Esotropia and Exotropia

  • E. C. Campos
  • C. Chiesi
Part of the Documenta Ophthalmologica Proceedings Series book series (DOPS, volume 32)

Abstract

With a series of experiments, it is shown that both in concomitant small-angle esotropia and exotropia, one can find wide areas of overlapping of the visual fields of the two eyes. This type of overlapping is defined as anomalous binocular vision. In this group of patients no suppression scotomas were detected. This is due to the fact that the test-targets were fusable stimuli, with appropriate controls for binocularity. The same patients, tested with more artificial (or ‘dissociating’) techniques, exhibited suppression scotomas in the identical areas where anomalous binocularity was found with our technique. In patients with large-angle exotropia, suppression scotomas were always present. However, their shape was strongly influenced by the testing technique.

It is concluded that reliable information on the quality of binocularity in strabismus can be obtained only with methods which alter as little as possible the everyday seeing condition of the patient.

Keywords

fIlters Peri Dition Strabismus Amblyopia 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Bagolini, B. Tecnica per l’esame délia visione binoculare senza introduzione di elementi dissocianti: ‘test del vetro striato’ Boll. Ocul. 37: 195 (1958).PubMedGoogle Scholar
  2. Bagolini, B. Diagnostic et possibilité de traitment de l’état sensorial du strabisme avec des instruments peu dissociants (test du verre strié et barre de filtres). Ann. Ocul 194: 236(1961).Google Scholar
  3. Bagolini, B. Anomalous correspondence: definition and diagnostic methods. Docum. Ophthalmol. 23: 346 (1967).CrossRefGoogle Scholar
  4. Bagolini, B. Part I. Sensorial anomalies in strabismus (Suppression, anomalous correspondence, amblyopia). Docum. Ophthalmol. 41: 1 (1976).CrossRefGoogle Scholar
  5. Bagolini, B. & E.C. Campos. Binocular campimetry in small-angle concomitant esotropia. Docum. Ophthalmol. Proc. Series Dr W. Junk, The Hague. 14: 405 (1977).Google Scholar
  6. Bagolini, B & N.M. Capobianco. Subjective space in concomitant squint. Am. J. Ophthal. 59:430(1965).PubMedGoogle Scholar
  7. Bagolini, B. & G. Ravalico. The binocular visual field in small angle strabismus. Proc. 2nd Int. Orth. Congr. Excerpta Medica, Amsterdam. 245: 43 (1971).Google Scholar
  8. Campos, E.C. Anomalous retinal correspondence. Monocular and binocular visual evoked responses. Arch. Ophthalmol. 98: 299 (1980).PubMedGoogle Scholar
  9. Campos, E. & T. Catellani. Perimetria binoculare nell’esotropia concomitante a piccolo angolo. Boll. Ocul. 55: 205 (1976).Google Scholar
  10. Campos, E.C. & C. Chiesi. Perimetrie binoculaire dans l’exotropie concomitant. Bull. et Mem. Soc. Française d’Ophtalmol. 92° anné. Masson, Paris, 1981 p. 301.Google Scholar
  11. Harms, H. Ort und Wesen der Bildhemmung bei Schielenden. Albrecht v. Graefes Arch. Ophthal. 138: 149(1937).CrossRefGoogle Scholar
  12. Herzau, V. Untersuchungen über das Gesichtsfeld Schielender. Docum. Ophthalmol. 49: 221(1980).CrossRefGoogle Scholar
  13. Jampolsky, A. Characteristics of suppression in Strabismus. Arch. Ophthalmol. 54: 683 (1955).Google Scholar
  14. Noorden, G.K. von. Burian-von Noorden’s Binocular Vision and Ocular Motility. Theory and Management of Strabismus. C.V. Mosby St. Louis, 1979.Google Scholar
  15. Parks, M.L. Ocular motility and strabismus. Harper & Row, Hagerstown, 1975.Google Scholar
  16. Pratt-Johnson, J.A. & A.L. MacDonald. Binocular visual field in strabismus. Canad. J. Ophthalmol. 11: 37 (1976).Google Scholar

Copyright information

© Dr W. Junk Publishers, The Hague 1982

Authors and Affiliations

  • E. C. Campos
    • 1
    • 2
  • C. Chiesi
    • 1
    • 2
  1. 1.Pediatric Ophthalmology and Strabismus Service Department of OphthalmologyUniversity of ModenaModenaItaly
  2. 2.E.C. Campos Clinica Oculistica dell’UniversitàModenaItaly

Personalised recommendations