Monocular versus binocular vision in postural control.

Objective: In previous studies about the control of posture there have been controversial findings. Our aim was to examine the role of monocular and binocular vision in controlling posture in quiet stance.

Methods: Twenty-eight normal subjects were tested.

Disconjugate memory-guided saccades to disparate targets: temporal aspects.

Memory-guided saccades to disparate targets (i.e., more eccentric for one eye) flashed 1 s earlier become disconjugate (i.

Motor execution is necessary to memorize disparity.

Binocular saccades in response to briefly flashed, memorized disparate targets (different for the two eyes) become disconjugate following repeated trials. After 15 min of such training, the disconjugacy persists, even when the target to memorize is no longer disparate. This study examines the hypothesis that disparity memorization has a motor basis.

Disconjugate memory-guided saccades to disparate targets: evidence for 3D sensitivity.

The saccadic system has been traditionally regarded as two-dimensional (horizontal, vertical) and basically conjugate in the two eyes. However, saccades to disparate targets (e.g.

Fast disconjugate adaptations of saccades in microstrabismic subjects.

In normal subjects, saccade amplitude inequality can be induced almost immediately when the image is made larger for one eye. This disconjugacy allows binocular fusion at the point of regard despite the image size inequality. It persists under subsequent monocular viewing which suggests a fast adaptive mechanism.

[Towards a day care hospital. V. Does repetition of the Newman test induce learning?].

Newman's test consist in draw a line on two parts of a figure made of points. This test was achieved in four successive trials by thirteen boys and fourteen girls, all voluntary students. In two trials subjects wear Reiser screen which reduce to a slight extent distinctness of vision.

[Active or postural prisms].

Oculomotor visual input of the postural system can be modified with a small powerful prism from 1 to 4 dioptries. The determination of features acting on postural tonus through visual and oculomotor input is difficult. It is necessary to examine postural and oculomotor consequences of each optical correction.

The effect of somatostatin analogue on chiasmal dysfunction from pituitary macroadenomas.

The long-acting somatostatin analogue SMS 201-995 has been shown to be efficient in the treatment of somatotropic and thyrotropic adenomas. In some cases, it can suppress adenoma secretion and lead to tumor shrinkage. Pituitary macroadenomas are often associated with a vision-threatening chiasmal syndrome.

[A protocol for monitoring antimalarial treatment].

We are showing a protocol to survey the treatment by APS, with a computer equipment that enable us to examine very shortly the central field of vision and the ERG; but that least investigation can be EOG or a PEV, according to the toxic pathology we are studying.