CONSTRUCTION OF MULTIFOCAL CONTACT LENS USING THE PUPIL APODIZATION Russian patent published in 2012 - IPC G02C7/04 

Abstract RU 2442200 C2

FIELD: ophthalmology.

SUBSTANCE: invention is designated to create contact lenses which correct refractive perception of the lenses user with due account for the pupil size and the Stiles-Crawford effect of the first order that enhance the efficiency of the light distribution under all viewing conditions; the above result is secured due to the lens constructing procedure assuring multifocal optical construction with at least two radiosymmetrical optical zones and upscale the multifocal optical construction on the basis of the size of the pupil by means of determination of the effective size of the pupil and regulation of the radius of each optical zone pursuant to the Stiles-Crawford effect for the correction of the sharpness of longsighted vision of the lens user as needed.

EFFECT: enhancement of the efficiency of light distribution under all viewing conditions and enhancement of the efficiency of the sharpness of longsighted vision of lenses users.

9 cl, 2 dwg.

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RU 2 442 200 C2

Authors

Vuli K. Bendzhamin

Gupta Amitava

Dates

2012-02-10Published

2007-05-08Filed