Subjects with no functional binocularity (no stereopsis and no peripheral fusion) show much less binocular summation of the pupillary response (about 12%) than normal subjects (29%). However, summation is occasionally quite high in clinically stereoblind subjects. The reasons could be the simultaneous use of nonoverlapping fields of the two eyes in large-angle exotropes, peripheral fusion (comm...

A sensitivity study involving a real-virtual object alignment task was performed in a stereoscopic augmented reality environment, in which the known conflict between binocular fusion and object interposition cues was expected to play a major role. The object was to evaluate subjects’ sensitivity to visual texture of a real hemisphere surface and to target position at designated probe points on ...

The optical instruments design has become an earnest demand towards the arrival of an aging society. It is necessary to measure the vision difference that can be permitted before the rivalry occurs for elderly people. In this study, we measured the limit of vision fusion in the normal vision and the cataract experiencing vision which is used to simulate the elderly vision. The result shows that...

The majority of neurons in the primary visual cortex of primates can be activated by stimulation of either eye; moreover, the monocular receptive fields of such neurons are located in about the same region of visual space. These well-known facts imply that binocular convergence in visual cortex can explain our cyclopean view of the world. To test the adequacy of this assumption, we examined how...

SEVERAL authors (Lyle and Foley, 1955; Naylor, Shannon, and Stanworth, 1956; Naylor and Stanworth, 1959; Guzzinati and Salvi, 1957; Pasino, Maraini, and Santori, 1963) have observed the absence of a stereoscopic perception of depth in early convergent strabismus with anomalous retinal correspondence. Even in patients with an extremely small fixed ocular deviation and harmonious anomalous retina...

SEVERAL authors (Lyle and Foley, 1955; Naylor, Shannon, and Stanworth, 1956; Naylor and Stanworth, 1959; Guzzinati and Salvi, 1957; Pasino, Maraini, and Santori, 1963) have observed the absence of a stereoscopic perception of depth in early convergent strabismus with anomalous retinal correspondence. Even in patients with an extremely small fixed ocular deviation and harmonious anomalous retina...

SEVERAL authors (Lyle and Foley, 1955; Naylor, Shannon, and Stanworth, 1956; Naylor and Stanworth, 1959; Guzzinati and Salvi, 1957; Pasino, Maraini, and Santori, 1963) have observed the absence of a stereoscopic perception of depth in early convergent strabismus with anomalous retinal correspondence. Even in patients with an extremely small fixed ocular deviation and harmonious anomalous retina...

PURPOSE We developed a binocular treatment for amblyopia based on antisuppression therapy. METHODS A novel procedure is outlined for measuring the extent to which the fixing eye suppresses the fellow amblyopic eye. We hypothesize that suppression renders a structurally binocular system, functionally monocular. RESULTS We demonstrate using three strabismic amblyopes that information can be c...

INTRODUCTION The aims of this study are to compare the binocular function following 7mm vs. standard (3.5 to 6.5mm) bilateral medial rectus recessions, and to determine whether timing of surgery or duration of misalignment prior to surgery impact on binocular function. Methods : Participants were 85 children with infantile esotropia: all had deviations of 50(Δ) or more and were followed for a m...

The binocular interactions that occur during dichoptic and binocular viewing were investigated using a letter acuity task in normally sighted children (age range 6-14 years) and adults, and in adults with anisometropic amblyopia. Our aims were to investigate the nature of binocular interactions that occur in each group, and the extent to which the characteristics of binocular interactions diffe...