Treatment of a Vertical Imbalance with Vertical Vergence Training

Authors

  • K.M. Robertson

DOI:

https://doi.org/10.65636/cjo.v46i4.7225

Keywords:

case report, vertical imbalance, vertical vergence, virtical prism

Abstract

The use of vertical prism in the treatment of vertical deviations has been done successfully in many cases. However, prism adaptation does occasionally occur. Obviously, vertical prism can­not correct the cyclophoria which is secondary to a paresis of one of the obliques. This is less apparent with the paretic superior or inferior rectii muscles. This case report describes the successful visual training program for an incomitant hyperphore who had indicated adaptation to relieving prisms.

References

1. Carter, D.B. "Effects of Prolonged Wearing of prism", Am. J. Optom. and Archives of Am. Acad. Optom. May, 1963. DOI: https://doi.org/10.1097/00006324-196305000-00003

2. Daum, F.M. "A comparison of the results of tonic and phasic vergence training" Am. J. Optom. & Physiol. Optics Vol. 60 No. 9 p. 769-775. DOI: https://doi.org/10.1097/00006324-198309000-00005

3. Henson, D.B., North, R. "Adaptation to Prism-Induced Heterophoria", Am. J. Optom. and Physiol. Optics, Vol. 57 No. 3 Mar, 1980 pp. 129-137. DOI: https://doi.org/10.1097/00006324-198003000-00001

4. Jones, B.A., "Orthoptic handling of fusional vergences", Am. Orthoptics J. Vol. 15, 1965, p. 21-25. DOI: https://doi.org/10.1080/0065955X.1965.11981482

5. Ogle and Prangin, "Observations on vertical divergence and hyperphorias", AMA Archives of Ophthal. Vol. 49, 1953, p, 3113. DOI: https://doi.org/10.1001/archopht.1953.00920020322009

Published

2026-08-14

How to Cite

Robertson, K. (2026). Treatment of a Vertical Imbalance with Vertical Vergence Training . Canadian Journal of Optometry, 46(4), 170–171. https://doi.org/10.65636/cjo.v46i4.7225

Issue

Section

Case Reports and Series