Universitat Politécnica De Catalunya

Universitat Polytècnica De Catalunya

Jaume Pujol Ramo

Fernando Díaz Doutón

Montserrat Arjona Carbonell

Sergio Oscar Luque

Mikel Aldaba Arévalo

Meritxell Vilaseca Ricart

Rosa Borrás Garcia

Sergio Òscar Luque

Carlos Enrique Garcia Guerra

Pablo Artal Soriano

Antonio Benito Galindo

Juan Carlos Ondategui Parra

Guillermo Pérez Sanchez

Maritxell Vilaseca Ricart

Rosa BORRÀS Garcia

Method, system and computer program for measuring light diffusion in the eyeball or in the ocular region. The method comprises: The system and the computer program are adapted for implementing the method.

Method, system and computer program for measuring light diffusion in the eyeball or in the ocular region

The invention relates to a method for the detection of visual function losses. The method comprises analysing the optical quality of a patient's eye based on one or more retinal images thereof or based on information relating to retinal images corresponding to an eye having an anterior segment and intraocular means that are healthy. The method comprises: detecting a visual function loss of the visual system of functional or pathological etiology, based on the result of the aforementioned analysis; and determining if this loss is due to a reduced and/or limited neural response, which induces alterations in the innervation of the intrinsic ocular muscles of the eye.

Method for the detection of visual function losses

It is applied to bifocal, multifocal or progressive intraocular lenses or contact lenses, multifocal corneal ablation or other multifocal configurations, comprising means for projecting the image of a point light source on the retina of a patient and an assembly for directly recording the light reflected in said retina after the double passage of the light through the ocular means, integrating a first focus corrector device inserted in the path of the light beam guided towards the retina and a second focus correction device inserted in the light beam reflected from the retina, to be guided towards the mentioned recording means, each of said focus correction devices having independent control means for controlling the operation thereof.

System and method for characterizing the optical quality and the pseudo-accommodation range of multifocal means used for correcting visual defects

The invention relates to a system and method for measuring light diffusion in the eyeball or eye region, by recording and processing retinal images. The inventive system includes a double-pass ophthalmoscopic system having means for correcting low-order aberrations. Said system can be used to record images of the plane of the retina on a CCD camera, the outer part of said images containing information relating to ocular scattering. The aforementioned images can be used to obtain the objective scattering index (OSI), providing the ratio between the energy on the outer part of the image and the energy in the central part, or, alternatively, the modulation transfer function (MTF) area can be used for this purpose once the low frequencies have been filtered. According to the inventive method, the low-order aberrations are corrected before a retinal image or a temporal sequence of retinal images is captured and recorded.

System and method for measuring light scattering in the eyeball or eye region by recording and processing retinal images

The invention relates to a method and system for the objective measurement of ocular accommodation. A double-pass ophthalmoscopic system is used which incorporates a periscope allowing the patient to binocularly see real objects in an open field and images of the retinal plane to be recorded on a CCD camera. The method includes obtaining, for different values of accommodation stimulation, a set of retinal images corresponding to different focal values in the retina, obtaining the different focal positions in the retina by moving the two lenses incorporated in the ophthalmoscopic system. The image with the best optical quality is obtained for each set of images and by associating the selected image with the known value of the accommodation stimulation it is possible to objectively measure the accommodation.

Method and system for the objective measurement of ocular accommodation

Growing community of inventors

Barcelona, Spain

Jaume Pujol Ramo