FR2620926A1 - Device for performing an examination or reeducation of binocular vision - Google Patents

Abstract

The invention relates to devices of the "stereogram" type, used for performing an examination or reeducation of binocular vision. These stereograms are made by forming two or more similar figures 1, either on a transparent support 2, or on an opaque support 3 pierced with two or more orifices 4 of any shape, but most often circular. Amongst the most useful applications of the invention, mention may be made of the diagnostic examination of binocular vision and its reeducation by divergence or convergence exercises. The present invention can be used either alone, or in combination with another device which is already known.

Description

The present invention relates to binocular vision rehabilitation instruments
Ji allow rehabilitation in a specialized environment or at the patient's home.

In conventional reeducation devices, the equipment is expensive and the exercises follow being practical in a specialized environment. With devices allowing rehabilitation
home, like the coloring sheets or the stereoscope, you can neither achieve physiological iopopy, nor vary the convergence.

 The use of stereograms in the form of two analogous figures makes it possible to vary and 'bring about convergence and divergence. The pairs of figures constituting a tereogram are very diverse, ranging from simple geometric figures (a circle i to complex gures. They are most often reproduced on an opaque support more or less rigid. These stereograms are used either separately or with a more implex device like the plate.

 These stereograms are used for convergence or divergence exercises.

n the exercises in convergence, the visual axes cross in front of the stereogram,: in the exercises in divergence, they cross back. For exercises in 3nvergence, learning is relatively easy because the patient is asked to fix a real 3jet placed in front of the stereogram. On the other hand, in the diverging exercises, learning is more difficult to achieve because the visual axes must intersect behind the stereogram. It is therefore impossible to fix a real object located behind the stereogram J if it is transferred to an opaque support.

 The stereogram, according to the invention, makes it possible to avoid this drawback because the subject can fix the object placed behind the stereogram.

In a first variant, the stereogram is produced by the transfer of two or more similar figures on a transparent support
In a second variant, the stereogram is produced by transferring two or more similar figures to a lacquer support; each of the figures being pierced with an ocular orifice.

According to a third variant, the stereogram produced by transfer onto an opaque support
two or more similar figures is pierced with two or more orifices, the tuation may be arbitrary with respect to the figures.

 In a fourth variant, a stereogram produced on a transparent support, or a stereogram produced on an opaque support pierced with orifices is used with a rehabilitation plate.

 According to a fifth variant, a stereogram produced on a transparent support or a stereogram produced on an opaque support pierced with orifices is used by reflection in a mirror.

The accompanying drawings illustrate the invention:
FIG. 1 represents a stereogram produced by the transfer of two similar figures on a transparent support.

 FIG. 2 represents a stereogram produced on an opaque support and pierced with two orifices.

 As shown, the device includes a transparent (2) or opaque (3) support on which two or more similar figures are reported (If the support is opaque, it is pierced with two or more orifices (4) which allow to look beyond the stereogram. During divergence rehabilitation exercises, the subject can fix a real object located beyond the stereogram, whether it is made on a transparent support or whether it is made on an opaque support provided with orifices.

 The device, object of the invention, can be used each time one wants to study or re-educate a patient whose binocular vision is questionable.

Claims (4)

 1) Apparatus for studying and rehabilitating binocular vision characterized by two or more similar figures (1) carried over on a transparent support (2).  2) Apparatus for studying and rehabilitating binocular vision characterized by two or more similar figures (1) carried over on an opaque support (3) pierced with two or more orifices (4).  3) Apparatus for studying and rehabilitating binocular vision according to claims i u 2 characterized by its association with another reeducation device such as lacquer.  4) Apparatus for studying and rehabilitating binocular vision according to claims 1 or 2, characterized by its association with a mirror.