Method and system for measuring intraocular scattering

摘要

The present invention relates to a method for measuring ocular scattering, comprising the steps of: sequentially projecting images from an extensive light source, corresponding to different visual angles, onto the retina; recording the output light in a camera or detector once it has passed through the eye twice; calculating the intensity at the center of each recorded image; calculating the PSF for each angle from the previous intensities; and calculating the average of the value of the PSF between the angles. The invention also relates to a system for carrying out said method. The invention can be used to measure the intensity of the scattered light in an objective manner.

主权项

1. A method for measuring ocular scattering comprising the steps of:
sequentially projecting images of an extensive object from an extensive light source onto the retina of an eye, subtending different visual angles corresponding to different eccentricities of the retina; recording the output light in a camera or photodetector once it has passed through the eye twice;
wherein a first diaphragm is conjugated with the pupil of the eye before the image is projected on the retina and a second diaphragm is conjugated with a pupil plane before the image is recorded to control the portion of the pupil area through which the output light of the eye is recorded; executing on a computer a computer program stored on a non-transitory computer readable medium encoded with instructions to perform the steps of:
calculating the intensity at the center of each recorded image;reconstructing the broad-field Point Spread Function (“PSF”) for each angle from the previously calculated intensities;calculating the average of the value of the PSF between the angles; andstoring the average of the value of the PSF between the angles in a computer readable medium for use in diagnosing ocular pathology.