INTRAOCULAR LENS
FIELD: medicine. ^ SUBSTANCE: eye lens contains optic element having front and back surfaces. Optic element ensures optic force in the range of 16 to 25 dioptres. Thereat at least one of the above said surfaces is characterized by such aspheric basic profile that optic element ensures negative spher...
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| creator | VAN STEFEN DZH. NOJ KARAKELLE MUTLU STEHNLI DEHN SIMPSON MAJKL DZH SE TSZIKHUN KHUN SIN CHZHAN SJAOSJAO |
| description | FIELD: medicine. ^ SUBSTANCE: eye lens contains optic element having front and back surfaces. Optic element ensures optic force in the range of 16 to 25 dioptres. Thereat at least one of the above said surfaces is characterized by such aspheric basic profile that optic element ensures negative spherical aberration in the range from -0.202 mu to -0.190 mu along the entire above mentioned range of the optic force. Optic element may contain principle plane ensuring alteration of displacement in the range from -0.019 mm to +0.018 mm from the selected plane of the above mentioned optic element. In one of the versions of the eye lens, profile of at least one of the above said surfaces is characterised by the following ratio: , where z stands for surface deflection on radial distance r from the optic axis of the lens, c is surface curvature in its cross point with the optic axis, k stands for conical constant, a1 is a coefficient of second - order asphericity, a2 is a coefficient of fourth-order asphericity, a3 is a coefficient of sixth-order asphericity , whereat c changes from -0.0369 (1/27.1) mm-1 to 0.0541 (1/18.5) mm-1, k changes from -73 to -27, a1 changes from -0.000209 mm-1 to -0.000264 mm-1, a2 changes from -0.0000297 mm-3 to -0.0000131 mm-3, and a3 changes from 0.00000978 mm-5 to 0.00000846 mm,. ^ EFFECT: ensures correction of spherical aberration. ^ 18 cl, 4 dwg, 2 tbl, 1 ex |
| format | Patent |
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In one of the versions of the eye lens, profile of at least one of the above said surfaces is characterised by the following ratio: , where z stands for surface deflection on radial distance r from the optic axis of the lens, c is surface curvature in its cross point with the optic axis, k stands for conical constant, a1 is a coefficient of second - order asphericity, a2 is a coefficient of fourth-order asphericity, a3 is a coefficient of sixth-order asphericity , whereat c changes from -0.0369 (1/27.1) mm-1 to 0.0541 (1/18.5) mm-1, k changes from -73 to -27, a1 changes from -0.000209 mm-1 to -0.000264 mm-1, a2 changes from -0.0000297 mm-3 to -0.0000131 mm-3, and a3 changes from 0.00000978 mm-5 to 0.00000846 mm,. ^ EFFECT: ensures correction of spherical aberration. ^ 18 cl, 4 dwg, 2 tbl, 1 ex</description><language>eng ; rus</language><subject>BANDAGES, DRESSINGS OR ABSORBENT PADS ; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. 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STENTS</subject><subject>FILTERS IMPLANTABLE INTO BLOOD VESSELS</subject><subject>FIRST-AID KITS</subject><subject>FOMENTATION</subject><subject>HUMAN NECESSITIES</subject><subject>HYGIENE</subject><subject>MEDICAL OR VETERINARY SCIENCE</subject><subject>ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES</subject><subject>PROSTHESES</subject><subject>TREATMENT OR PROTECTION OF EYES OR EARS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2008</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBDw9AsJcvR3DvVxDFLwcfUL5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8UGhRsbGlsYmhs5GxkQoAQDWPB1R</recordid><startdate>20081127</startdate><enddate>20081127</enddate><creator>VAN STEFEN DZH. 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STENTS</topic><topic>FILTERS IMPLANTABLE INTO BLOOD VESSELS</topic><topic>FIRST-AID KITS</topic><topic>FOMENTATION</topic><topic>HUMAN NECESSITIES</topic><topic>HYGIENE</topic><topic>MEDICAL OR VETERINARY SCIENCE</topic><topic>ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES</topic><topic>PROSTHESES</topic><topic>TREATMENT OR PROTECTION OF EYES OR EARS</topic><toplevel>online_resources</toplevel><creatorcontrib>VAN STEFEN DZH. NOJ</creatorcontrib><creatorcontrib>KARAKELLE MUTLU</creatorcontrib><creatorcontrib>STEHNLI DEHN</creatorcontrib><creatorcontrib>SIMPSON MAJKL DZH</creatorcontrib><creatorcontrib>SE TSZIKHUN</creatorcontrib><creatorcontrib>KHUN SIN</creatorcontrib><creatorcontrib>CHZHAN SJAOSJAO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VAN STEFEN DZH. NOJ</au><au>KARAKELLE MUTLU</au><au>STEHNLI DEHN</au><au>SIMPSON MAJKL DZH</au><au>SE TSZIKHUN</au><au>KHUN SIN</au><au>CHZHAN SJAOSJAO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>INTRAOCULAR LENS</title><date>2008-11-27</date><risdate>2008</risdate><abstract>FIELD: medicine. ^ SUBSTANCE: eye lens contains optic element having front and back surfaces. Optic element ensures optic force in the range of 16 to 25 dioptres. Thereat at least one of the above said surfaces is characterized by such aspheric basic profile that optic element ensures negative spherical aberration in the range from -0.202 mu to -0.190 mu along the entire above mentioned range of the optic force. Optic element may contain principle plane ensuring alteration of displacement in the range from -0.019 mm to +0.018 mm from the selected plane of the above mentioned optic element. In one of the versions of the eye lens, profile of at least one of the above said surfaces is characterised by the following ratio: , where z stands for surface deflection on radial distance r from the optic axis of the lens, c is surface curvature in its cross point with the optic axis, k stands for conical constant, a1 is a coefficient of second - order asphericity, a2 is a coefficient of fourth-order asphericity, a3 is a coefficient of sixth-order asphericity , whereat c changes from -0.0369 (1/27.1) mm-1 to 0.0541 (1/18.5) mm-1, k changes from -73 to -27, a1 changes from -0.000209 mm-1 to -0.000264 mm-1, a2 changes from -0.0000297 mm-3 to -0.0000131 mm-3, and a3 changes from 0.00000978 mm-5 to 0.00000846 mm,. ^ EFFECT: ensures correction of spherical aberration. ^ 18 cl, 4 dwg, 2 tbl, 1 ex</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BANDAGES, DRESSINGS OR ABSORBENT PADS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS |
| title | INTRAOCULAR LENS |
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