METHOD OF PREDICTING THE QUALITY OF CONTRAST VISION AFTER IMPLANTATION OF MULTIFOCAL INTRAOCULAR LENSES Russian patent published in 2023 - IPC A61F9/07 

FIELD: medicine; ophthalmology.

SUBSTANCE: invention can be used to predict the quality of contrast vision after implantation of multifocal intraocular lenses. Spatial contrast sensitivity is assessed based on the presence of undesirable lighting effects — glare by bright light, iridescent circles around luminous objects in the daytime and scores, while if unwanted lighting effects do not bother, they are rated as 1 point, if they are rare as 2 points, if always disturbed as 3 points. The quality of contrast sensitivity without illumination is determined for a contrast parameter of 1:2 using a given equation with the calculation of the P index. At P more than 0.5, a high quality of contrast vision is predicted under these conditions, at P 0.5 or less, a low quality of contrast vision is predicted in the data conditions.

EFFECT: method makes it possible to predict the quality of contrast vision by obtaining reliable data that correlate with the results of instrumental evaluation, due to a set of techniques of the claimed invention.

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