FIELD: medicine.
SUBSTANCE: multifocal diffractive ophthalmic lens comprises a base optic for changing the refractive power of the user's eye, diffraction element on at least one of front and rear surface, providing at least one of refracting force for far vision and refracting force for near vision. Basic optics is configured to form negative spherical aberration (SA) for refracting force for far vision, and the diffractive element is configured to form a positive spherical aberration for the refractive force for near vision.
EFFECT: technical result is increased depth of field of presbyopic and pseudofakic vision with reduced visibility of defocused part of image on retina.
19 cl, 9 dwg
| Title |
Year |
Author |
Number |
| MULTIFOCAL CORRECTION PROVIDING IMPROVED QUALITY OF VISION |
2010 |
- Brehdli Artur
- Kollbaum Pit S.
- Tajbos Larri N.
|
RU2556320C2 |
| METHOD OF PREDICTING VISUAL ACUITY AT A DISTANCE OF 40 CM AFTER PHACOEMULSIFICATION WITH IMPLANTATION OF AN INTRAOCULAR LENS WITH AN INCREASED DEPTH OF FOCUS |
2022 |
- Kulikov Aleksej Nikolaevich
- Danilenko Ekaterina Vladimirovna
- Nevin Nikolaj Viktorovich
- Kozhevnikov Evgenij Yurevich
|
RU2798761C1 |
| OPTICAL SYSTEM HAVING VARIABLE PARAMETERS: COMPOSITION AND MATCHING OF OPTICAL ELEMENTS FOR UTILISING MAXIMUM ADVANTAGES OF BINOCULAR VISION |
2008 |
- Khun Sin'
- Karakelle Mutlu
- Chzhan Sjaosjao
- Brehdli Artur
|
RU2448352C2 |
| CONSTRUCTION OF POSITIVE LENS WITH IMPULSE FEED FOR CONTROL OF MYOPIA, INCREASED FOCUSING DEPTH AND CORRECTION OF PRESBYOPIA |
2017 |
- Brennan, Noel A.
- Caldarise, Salvatore
- Chehab, Khaled
- Cheng, Xu
- Collins, Michael J.
- Davis, Brett A.
- Hernandez, Jaclyn
- Toner, Adam
- Ye, Fan
|
RU2664193C1 |
| MULTI-FOCAL INTRAOCULAR LENS AND METHOD OF MANUFACTURE OF THAT LENS |
2005 |
- Lenkova Galina Aleksandrovna
- Koronkevich Vol'Demar Petrovich
- Korol'Kov Viktor Pavlovich
- Iskakov Igor' Alekseevich
|
RU2303961C1 |
| CONSTRUCTION OF MULTIFOCAL LENS AND METHOD OF PREVENTION AND/OR DECOMMISSION OF PROGRATIZATION OF MYOPIA |
2015 |
- Brennan Noel A.
- Chekhab Kkhaled A.
- Chen Syuj
- Mudi Kurt Dzhon
- Vej Sin
|
RU2628059C2 |
| CONSTRUCTION OF MULTIFOCAL LENS AND METHOD OF PREVENTION AND/OR SLOWING PROGRESSION OF MYOPIA |
2017 |
- Wooley, C. Benjamin
- Brennan, Noel
|
RU2671544C2 |
| SYSTEM OF LENSES FOR PRESBYOPES WITH DIFFERENT EYE VISION |
2015 |
|
RU2628462C2 |
| METHOD OF TREATING PRESBYOPIA |
2008 |
- Lindacher Dzhozef Majkl
- Sastri Shjamant Ramana
|
RU2471212C2 |
| LENS DESIGN WITH MASK AND METHOD FOR MYOPIA PREVENTION AND/OR PROGRESSION REDUCTION |
2015 |
- Brennan Noel A.
- Chekhab Kkhaled A.
- Chen Syuj
- Mudi Kurt Dzhon
- Roffman Dzheffri Kh.
- Vej Sin
|
RU2631210C2 |
