Results: After 12 weeks of treatment, the OBVAT group’s mean Convergence Insufficiency Symptom Survey score (15.1) was statistically significantly lower than those of 21.3, 24.7, and 21.9 in the HBCVAT , HBPP, and OBPT groups, respectively (P .001). The OBVAT group also demonstrated a significantly improved near point of convergence and positive fusional vergence at near compared with the other...

It is obvious that a symposium of this kind on the subject of strabismus is concerned to a large extent with the growing-points of the specialty, and this is entirely appropriate when the meeting is held within the confines of St. John's College, Cambridge, a University centre of learning and academic progress for centuries, and abundantly emphasized by the link of this particular building with...

Results: After 12 weeks of treatment, the OBVAT group’s mean Convergence Insufficiency Symptom Survey score (15.1) was statistically significantly lower than those of 21.3, 24.7, and 21.9 in the HBCVAT , HBPP, and OBPT groups, respectively (P .001). The OBVAT group also demonstrated a significantly improved near point of convergence and positive fusional vergence at near compared with the other...

Infants have been shown to make vergence eye movements by 1 month of age to stimulation with prisms or targets moving in depth. However, little is currently understood about the threshold sensitivity of the maturing visual system to such stimulation. In this study, 5- to 10-week-old human infants and adults viewed a target moving in depth as a triangle wave of three amplitudes (1.0, 0.5, and 0....

Reading requires three-dimensional motor control: saccades bring the eyes from left to right, fixating word after word; and oblique saccades bring the eyes to the next line of the text. The angle of vergence of the two optic axes should be adjusted to the depth of the book or screen and--most importantly--should be maintained in a sustained manner during saccades and fixations. Maintenance of v...

PURPOSE To assess the long-term stability of improvements in symptoms and signs in 9- to 17-year-old children enrolled in the Convergence Insufficiency Treatment Trial who were asymptomatic after treatment for convergence insufficiency. METHODS Seventy-nine patients who were asymptomatic after a 12-week therapy program for convergence insufficiency were followed for 1 year [33/60 in office-ba...