FR2599156A1

FR2599156A1 - Fixed iris correcting short-sighted and long-sighted vision

Info

Publication number: FR2599156A1
Application number: FR8606164A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-05-20
Filing date: 1986-05-20
Publication date: 1987-11-27
Also published as: FR2599156B1

Abstract

Soft contact lens defining a fixed "iris" correcting short-sighted vision and long-sighted vision. This device consists of a non-transparent translucent lens provided with a single orifice at the location of the pupil or at a distance of from a half to one millimetre along its axis for short sight and with two orifices separated by twice the distance constituted between the external edge of the tube and the first orifice for long sight. The orifice of the internal concave portion of the lens is at the location of the pupil or at a distance of a half to one millimetre along its axis. These devices, according to the invention correct short sight and long sight.

Description

La présente invention a pour objet la correction de la vue pour les myopes et les hypermétropes par un " iris " fixe. The present invention relates to the correction of sight for myopics and hyperopia with a fixed "iris".

L'invention consiste en un iris artificiel apposé sur l'oeil comme une lentille souple de contact. Cette -lentille conçue selon le procédé du brevet Japonais " Nippon Oil and
Fats Company ( 2 523 896 A I ) ou celui de Nuchman B. et whang S. ( 2 544 87 8 A I ) n'a pas d'effet correctif en elle-même, mais par l'action d'un orifice ( Figure I ) agissant sur le faisceau lumineux qui apporte l'image à la rétine.The invention consists of an artificial iris affixed to the eye like a soft contact lens. This lens designed according to the method of the Japanese patent "Nippon Oil and
Fats Company (2 523 896 AI) or that of Nuchman B. and whang S. (2 544 87 8 AI) has no corrective effect in itself, but by the action of an orifice (Figure I ) acting on the light beam which brings the image to the retina.

La lentille est translucide mais pas transpar nte ; l'ori- fice qui peut varier du dixiéme de millimétre à plusieurs millimètres selon le type de myopie ( si celle-ci est associé à de l'hypermétropie ) est circulaire , disposé à l'endroit de la pupille ou à un demi ou un millimètre dans son axe ( Fig.2 )
Dans le cas de l'hypermétropie, l'invention consiste en une lentille souple de contact, translucide mais pas transparente, munies de deux orifices correcteurs, de diametre identique dans un tube de diamétre plus large que les orifices. La distance séparant le bord extérieur du tube et le premier orifice est multipliée par deux entre le premier orifice et le second.The lens is translucent but not transparent; the orifice which can vary from the tenth of a millimeter to several millimeters depending on the type of myopia (if it is associated with hyperopia) is circular, placed at the location of the pupil or at half or one millimeter in its axis (Fig. 2)
In the case of hyperopia, the invention consists of a flexible contact lens, translucent but not transparent, provided with two correcting orifices, of identical diameter in a tube with a diameter larger than the orifices. The distance between the outer edge of the tube and the first port is doubled between the first port and the second.

le diamétre de l'orifice circulaire peut varier du dixiéme de millimétre à plusieurs millimétres selon le cas en présence.the diameter of the circular orifice can vary from tenths of a millimeter to several millimeters depending on the case involved.

les détails de structure sont décrits dans la figure 3, et se compose d'un tube ( Fig 3a ), de deux orifices ( Fig 3b ,3c) l'orifice de la partie concave est disposé à l'endroit de la pupille ( Fig. 3d ) ou. à une distance de un demi ou un milli métre dans son axe ( Fig. 3e ). the structural details are described in Figure 3, and consists of a tube (Fig 3a), two orifices (Fig 3b, 3c) the orifice of the concave part is arranged at the location of the pupil (Fig . 3d) or. at a distance of a half or a millimeter in its axis (Fig. 3e).

Cette invention permet à la rétine de travailler et d'avoir une action positive sur les performances de l'oeil. les seules exigences demandées à la prothése sont d'hêtre translucide et sans risque d'intolérance pour les tissus de l'oeil. Sa fabrication est moins complexe et moins coûteuse que les prothéses traditionnelles. This invention allows the retina to work and have a positive action on the performance of the eye. the only requirements of the prosthesis are to be translucent and without risk of intolerance for the tissues of the eye. Its manufacture is less complex and less expensive than traditional prostheses.

La même lentille peut être portée avec la partie convexe exteriaure, par rapport raz l'oeil, complétement opacifiée avec un colorant ( Fig. 4 ). The same lens can be worn with the external convex part, relative to the eye, completely opacified with a dye (Fig. 4).

Claims

T) soft contact lens for the eye characterized by

that it comprises a non-transparent translucent part possibly opacified by a dye on the external convex part and provided with a simple orifice for the myopic and two orifices in a tube for the hyperopic

2) lens according to claim I, characterized in that the orifice correcting myopia is located at the location of the pupil or at a distance of a half or a millimeter in its axis. the diameter ranges from one tenth of a millimeter to several millimeters.

3) Hyperopic lens according to claim I, characterized in that it has two orifices of identical diameters.

4) lens according to claim 3 characterized by a tube with a diameter larger than the orifices and the distance between its outer edge and the first orifice is multiplied by two between the first orifice and the second.

5) Lens according to claim 4 characterized in that the orifice of the inner concave part is at the location of the pupil or at a distance of half or a millimeter in its axis.