ES2244276A1 - Flat meter for assessing aniseikonia has lens system that fuses two images seen by eyes of subject - Google Patents
Flat meter for assessing aniseikonia has lens system that fuses two images seen by eyes of subjectInfo
- Publication number
- ES2244276A1 ES2244276A1 ES200300627A ES200300627A ES2244276A1 ES 2244276 A1 ES2244276 A1 ES 2244276A1 ES 200300627 A ES200300627 A ES 200300627A ES 200300627 A ES200300627 A ES 200300627A ES 2244276 A1 ES2244276 A1 ES 2244276A1
- Authority
- ES
- Spain
- Prior art keywords
- foria
- aniseikonia
- flat
- value
- lenses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Eye Examination Apparatus (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Eyeglasses (AREA)
Abstract
Description
Eikonómetro plano y procedimiento para la obtención de la foria asociada.Flat eikonometer and procedure for Obtaining the associated foria.
La presente invención consiste en un dispositivo capaz de medir la aniseikonia en un observador cancelando la foria asociada o disparidad de fijación del mismo.The present invention consists of a device able to measure aniseikonia in an observer canceling the foria associated or disparity of fixation thereof.
Los dispositivos que existen en la actualidad para medir la aniseikonia son diversos y se han propuesto diferentes instrumentos desde la década de los 60 en función de la tecnología empleada en la fusión de imágenes. Así, existen diferentes patentes (US2002159169, US4427272, US2364844, SU1773378, SU1759419, SU1648337, SU1514340, DE4091126, DE4091126, DE3111665) que incorporan los avances en lentes progresivas, polarización, visión tridimensional, etc. Sin embargo, el estado de la técnica en la materia no aporta un dispositivo que determine la aniseikonia compensando la foria asociada, un parámetro que enmascara el valor real de la aniseikonia y que es necesario cancelar para proporcionar una medida real de la misma.The devices that exist today to measure aniseikonia are diverse and have been proposed different instruments since the 60s depending on the technology used in image fusion. Thus, there are different patents (US2002159169, US4427272, US2364844, SU1773378, SU1759419, SU1648337, SU1514340, DE4091126, DE4091126, DE3111665) that incorporate advances in progressive lenses, polarization, three-dimensional vision, etc. However, the state of the art in matter does not provide a device that determines aniseikonia compensating the associated foria, a parameter that masks the value real aniseikonia and it is necessary to cancel to provide a real measure of it.
El Eikonómetro plano y su procedimiento para la obtención de foria asociada es un dispositivo capaz de medir la aniseikonia de un observador con y sin compensación de foria asociada a partir de un optotipo plano que es iluminado por una fuente de iluminación convencional. Así, la imagen reflejada en el optotipo es polarizada y se incluyen dos láminas polarizadoras para que se permita parcialmente la fusión de los dos campos diferentes. Cercano a la mentonera donde el observador reposa y fija la cabeza, se encuentran unos monturas para cada ojo que permiten introducir los prismas deseados que cancelen la disparidad de fijación o foria asociada. Finalmente se incorporan también, en la misma montura, lentes iseikónicas que cancelen la aniseikonia. El valor de aumento de dichas lentes es el valor de la aniseikonia.The flat eikonometer and its procedure for obtaining associated foria is a device capable of measuring the aniseikonia of an observer with and without compensation of foria associated from a flat optotype that is illuminated by a conventional lighting source. Thus, the image reflected in the optotype is polarized and two polarizing sheets are included for that the fusion of the two different fields be partially allowed. Close to the chin guard where the observer rests and fixes the head, there are some frames for each eye that allow you to enter the desired prisms that cancel the fixation or foria disparity associated. Finally they are also incorporated, in the same mount, iseikonic lenses that cancel aniseikonia. The increase value of these lenses is the value of aniseikonia.
Así, el sujeto observa un optotipo diferente para cada ojo mediante el mecanismo polarizador y ubicando cerca de los ojos las monturas en las que se pueden introducir el valor prismático que neutraliza la disparidad de fijación o foria asociada, al fusionar las dos imágenes se realiza la medición de la aniseikonia con la lectura de los aumentos de las lentes iseikónicas.Thus, the subject observes a different optotype for each eye through the polarizing mechanism and locating near the eyes the frames in which the value can be entered prismatic that neutralizes the disparity of fixation or foria associated, when merging the two images the measurement of the aniseikonia with the reading of the magnification of the lenses iseikonics.
Con objeto de presentar una realización de la invención se presentan a continuación una figura en las que se representa de un modo práctico la realización de la invención descrita.In order to present an embodiment of the invention are presented below a figure in which represents in a practical way the embodiment of the invention described.
\bullet Figura (1): Esquema general Eikonómetro plano y procedimiento para la obtención de foria asociada''.Figure (1): Eikonometer general scheme plan and procedure for obtaining associated foria. ''
En dicha figura, los elementos numerados se relacionan a continuación:In said figure, the numbered elements are relate below:
- (1):(one):
- OptotipoOptotype
- (2):(2):
- Sistema de iluminaciónLighting system
- (3):(3):
- Láminas polarizadorasPolarizing blades
- (4):(4):
- PrismaPrism
- (5):(5):
- DiafragmasDiaphragms
- (6):(6):
- OjosEyes
- (7):(7):
- Lentes iseicónicasIseiconic lenses
Una realización preferida de la invención se puede construir a partir de una caja que contiene los elementos que se muestran en la figura 1 y que se describen a continuación.A preferred embodiment of the invention is you can build from a box that contains the elements that They are shown in Figure 1 and described below.
En primer lugar un optotipo (1) consistente en unas marcas horizontales y verticales con unos números a los lados. Encima del optotipo (1) se colocan dos láminas polarizadoras con polarizaciones perpendiculares, de forma que la luz procedentes del sistema de iluminación (2) reflejada a través del proyector tenga dos polarizaciones distintas. Para fusionar las imágenes se utilizan dos láminas polarizadoras (3) incorporadas a unas monturas. Un desplazamiento de los números al fusionar las imágenes es indicativo de la condición de aniseikonia. Para cancelar la disparidad de fijación el sistema permite incorporar en las monturas los prismas (4) con el valor prismático correspondiente. Dichos prismas (4) se colocan en los diafragmas (5). Percibidas simultáneamente las imágenes ya sin foria asociada en cualquiera de los dos ojos (6), se van añadiendo lentes iseicónicas (7) hasta que las marcas de los números se igualen en posición. La magnitud de aumento de las lentes (7) correspondientes proporciona el valor de la aniseikonia con compensación de foria.First of all an optotype (1) consisting of horizontal and vertical marks with numbers on the sides. On top of the optotype (1) two polarizing sheets are placed with perpendicular polarizations, so that the light coming from the lighting system (2) reflected through the projector have Two different polarizations. To merge the images are used two polarizing blades (3) incorporated into frames. A number shifting when merging images is indicative of the condition of aniseikonia. To cancel the fixing disparity the system allows to incorporate in the frames the prisms (4) with the corresponding prismatic value. Sayings Prisms (4) are placed in the diaphragms (5). Perceived simultaneously the images already without associated foria in any of both eyes (6), iseiconic lenses (7) are added until the number marks are equalized in position. The magnitude of magnification of the corresponding lenses (7) provides the value of Aniseikonia with foria compensation.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200300627A ES2244276B1 (en) | 2003-03-14 | 2003-03-14 | FLAT EIKONOMETER AND PROCEDURE FOR OBTAINING THE ASSOCIATED FORIA. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200300627A ES2244276B1 (en) | 2003-03-14 | 2003-03-14 | FLAT EIKONOMETER AND PROCEDURE FOR OBTAINING THE ASSOCIATED FORIA. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2244276A1 true ES2244276A1 (en) | 2005-12-01 |
ES2244276B1 ES2244276B1 (en) | 2007-02-01 |
Family
ID=35453062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES200300627A Expired - Fee Related ES2244276B1 (en) | 2003-03-14 | 2003-03-14 | FLAT EIKONOMETER AND PROCEDURE FOR OBTAINING THE ASSOCIATED FORIA. |
Country Status (1)
Country | Link |
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ES (1) | ES2244276B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2526097A1 (en) * | 2013-06-28 | 2015-01-05 | Universidad Complutense De Madrid | Trial frame for measuring aniseiconia (Machine-translation by Google Translate, not legally binding) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2364844A (en) * | 1943-09-20 | 1944-12-12 | Harry L Fuog | Aniseikonia determining and measuring device |
US5629748A (en) * | 1994-08-10 | 1997-05-13 | Nidek Co., Ltd. | Visual function examination apparatus including binocular fixation target |
JP2001000392A (en) * | 1999-06-23 | 2001-01-09 | Kikuchi Megane:Kk | Near visual function examination target plate |
-
2003
- 2003-03-14 ES ES200300627A patent/ES2244276B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2364844A (en) * | 1943-09-20 | 1944-12-12 | Harry L Fuog | Aniseikonia determining and measuring device |
US5629748A (en) * | 1994-08-10 | 1997-05-13 | Nidek Co., Ltd. | Visual function examination apparatus including binocular fixation target |
JP2001000392A (en) * | 1999-06-23 | 2001-01-09 | Kikuchi Megane:Kk | Near visual function examination target plate |
Non-Patent Citations (2)
Title |
---|
Base de Datos de PAJ en JPO & JP 2001000392 A (KIKUCHI MEGANE KK) 09.01.2001, resumen; figuras. * |
Base de Datos de PAJ en JPO, JP 2001000392 A (KIKUCHI MEGANE KK) 09.01.2001, resumen; figuras. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2526097A1 (en) * | 2013-06-28 | 2015-01-05 | Universidad Complutense De Madrid | Trial frame for measuring aniseiconia (Machine-translation by Google Translate, not legally binding) |
Also Published As
Publication number | Publication date |
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ES2244276B1 (en) | 2007-02-01 |
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