HapticV1, PascalFrancis, Corpus, bibRecord, 000F94

Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power

Identifieur interne : 000F94 ( PascalFrancis/Corpus ); précédent : 000F93; suivant : 000F95

Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power

Auteurs : Sverker Norrby

Source :

Journal of cataract and refractive surgery [ 0886-3350 ] ; 2004.

RBID : Pascal:04-0296953

Descripteurs français

Pascal (Inist)
- Cristallin, Plan, Lentille épaisse, Tracé rayon, Lentille intraoculaire, Puissance, Chirurgie, Ophtalmologie, Traitement.

English descriptors

KwdEn :
- Intraocular lens, Lens, Ophthalmology, Plane, Power, Ray tracing, Surgery, Thick lens, Treatment.

Abstract

Purpose: To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL Is separated from the calculation itself. Setting: Pharmacia, Groningen, The Netherlands. Methods: The minimum biometry input needed for IOL power calculation is the mean anterior corneal radius and axial length of the eye. The lens haptic plane (LHP) is the plane where the IOL haptics make contact with eye tissue. It is an anatomical site (eg, the equator of the capsular bag) and is independent of the IOL model. The position of the IOL optic in relation to the LHP is determined from the exact design of the IOL. Gullstrand's eye model is adopted to obtain the posterior corneal radius, thickness of the cornea, and refractive indices of the eye media. Thick-lens ray tracing in the paraxial limit is used for the optical calculation. Results: A spreadsheet is given for the calculation. Conclusions: The methodology developed allows for IOL power calculation from first principles (ie, using true physical distances, radii, and refractive indices as input for the optical calculation).

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

A01	`01`	`1`		`@0 0886-3350`
A02	`01`			`@0 JCSUEV`
A03		`1`		`@0 J. cataract refractive surg.`
A05				`@2 30`
A06				`@2 5`
A08	`01`	`1`	`ENG`	`@1 Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power`
A11	`01`	`1`		`@1 NORRBY (Sverker)`
A14	`01`			`@1 Pharmacia @2 Groningen @3 NLD @Z 1 aut.`
A20				`@1 1000-1005`
A21				`@1 2004`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 20937 @5 354000114546840080`
A44				`@0 0000 @1 © 2004 INIST-CNRS. All rights reserved.`
A45				`@0 28 ref.`
A47	`01`	`1`		`@0 04-0296953`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Journal of cataract and refractive surgery`
A66	`01`			`@0 USA`
C01	`01`		`ENG`	@0 Purpose: To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL Is separated from the calculation itself. Setting: Pharmacia, Groningen, The Netherlands. Methods: The minimum biometry input needed for IOL power calculation is the mean anterior corneal radius and axial length of the eye. The lens haptic plane (LHP) is the plane where the IOL haptics make contact with eye tissue. It is an anatomical site (eg, the equator of the capsular bag) and is independent of the IOL model. The position of the IOL optic in relation to the LHP is determined from the exact design of the IOL. Gullstrand's eye model is adopted to obtain the posterior corneal radius, thickness of the cornea, and refractive indices of the eye media. Thick-lens ray tracing in the paraxial limit is used for the optical calculation. Results: A spreadsheet is given for the calculation. Conclusions: The methodology developed allows for IOL power calculation from first principles (ie, using true physical distances, radii, and refractive indices as input for the optical calculation).
C02	`01`	`X`		`@0 002B25B`
C03	`01`	`X`	`FRE`	`@0 Cristallin @5 02`
C03	`01`	`X`	`ENG`	`@0 Lens @5 02`
C03	`01`	`X`	`SPA`	`@0 Cristalino @5 02`
C03	`02`	`X`	`FRE`	`@0 Plan @5 03`
C03	`02`	`X`	`ENG`	`@0 Plane @5 03`
C03	`02`	`X`	`SPA`	`@0 Plano @5 03`
C03	`03`	`X`	`FRE`	`@0 Lentille épaisse @5 05`
C03	`03`	`X`	`ENG`	`@0 Thick lens @5 05`
C03	`03`	`X`	`SPA`	`@0 Lente grueso @5 05`
C03	`04`	`X`	`FRE`	`@0 Tracé rayon @5 06`
C03	`04`	`X`	`ENG`	`@0 Ray tracing @5 06`
C03	`04`	`X`	`SPA`	`@0 Trazado rayos @5 06`
C03	`05`	`X`	`FRE`	`@0 Lentille intraoculaire @5 08`
C03	`05`	`X`	`ENG`	`@0 Intraocular lens @5 08`
C03	`05`	`X`	`SPA`	`@0 Lente intraocular @5 08`
C03	`06`	`X`	`FRE`	`@0 Puissance @5 09`
C03	`06`	`X`	`ENG`	`@0 Power @5 09`
C03	`06`	`X`	`SPA`	`@0 Potencia @5 09`
C03	`07`	`X`	`FRE`	`@0 Chirurgie @5 11`
C03	`07`	`X`	`ENG`	`@0 Surgery @5 11`
C03	`07`	`X`	`SPA`	`@0 Cirugía @5 11`
C03	`08`	`X`	`FRE`	`@0 Ophtalmologie @5 12`
C03	`08`	`X`	`ENG`	`@0 Ophthalmology @5 12`
C03	`08`	`X`	`SPA`	`@0 Oftalmología @5 12`
C03	`09`	`X`	`FRE`	`@0 Traitement @5 25`
C03	`09`	`X`	`ENG`	`@0 Treatment @5 25`
C03	`09`	`X`	`SPA`	`@0 Tratamiento @5 25`
N21				`@1 180`
N44	`01`			`@1 OTO`
N82				`@1 OTO`

Format Inist (serveur)

NO :	PASCAL 04-0296953 INIST
ET :	Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power
AU :	NORRBY (Sverker)
AF :	Pharmacia/Groningen/Pays-Bas (1 aut.)
DT :	Publication en série; Niveau analytique
SO :	Journal of cataract and refractive surgery; ISSN 0886-3350; Coden JCSUEV; Etats-Unis; Da. 2004; Vol. 30; No. 5; Pp. 1000-1005; Bibl. 28 ref.
LA :	Anglais
EA :	Purpose: To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL Is separated from the calculation itself. Setting: Pharmacia, Groningen, The Netherlands. Methods: The minimum biometry input needed for IOL power calculation is the mean anterior corneal radius and axial length of the eye. The lens haptic plane (LHP) is the plane where the IOL haptics make contact with eye tissue. It is an anatomical site (eg, the equator of the capsular bag) and is independent of the IOL model. The position of the IOL optic in relation to the LHP is determined from the exact design of the IOL. Gullstrand's eye model is adopted to obtain the posterior corneal radius, thickness of the cornea, and refractive indices of the eye media. Thick-lens ray tracing in the paraxial limit is used for the optical calculation. Results: A spreadsheet is given for the calculation. Conclusions: The methodology developed allows for IOL power calculation from first principles (ie, using true physical distances, radii, and refractive indices as input for the optical calculation).
CC :	002B25B
FD :	Cristallin; Plan; Lentille épaisse; Tracé rayon; Lentille intraoculaire; Puissance; Chirurgie; Ophtalmologie; Traitement
ED :	Lens; Plane; Thick lens; Ray tracing; Intraocular lens; Power; Surgery; Ophthalmology; Treatment
SD :	Cristalino; Plano; Lente grueso; Trazado rayos; Lente intraocular; Potencia; Cirugía; Oftalmología; Tratamiento
LO :	INIST-20937.354000114546840080
ID :	04-0296953

Links to Exploration step

Pascal:04-0296953

Le document en format XML

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<front><div type="abstract" xml:lang="en">Purpose: To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL Is separated from the calculation itself. Setting: Pharmacia, Groningen, The Netherlands. Methods: The minimum biometry input needed for IOL power calculation is the mean anterior corneal radius and axial length of the eye. The lens haptic plane (LHP) is the plane where the IOL haptics make contact with eye tissue. It is an anatomical site (eg, the equator of the capsular bag) and is independent of the IOL model. The position of the IOL optic in relation to the LHP is determined from the exact design of the IOL. Gullstrand's eye model is adopted to obtain the posterior corneal radius, thickness of the cornea, and refractive indices of the eye media. Thick-lens ray tracing in the paraxial limit is used for the optical calculation. Results: A spreadsheet is given for the calculation. Conclusions: The methodology developed allows for IOL power calculation from first principles (ie, using true physical distances, radii, and refractive indices as input for the optical calculation).</div>
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<ET>Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power</ET>
<AU>NORRBY (Sverker)</AU>
<AF>Pharmacia/Groningen/Pays-Bas (1 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
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<LA>Anglais</LA>
<EA>Purpose: To develop a methodology for intraocular lens (IOL) power calculation in which the task of predicting the postoperative position of the IOL Is separated from the calculation itself. Setting: Pharmacia, Groningen, The Netherlands. Methods: The minimum biometry input needed for IOL power calculation is the mean anterior corneal radius and axial length of the eye. The lens haptic plane (LHP) is the plane where the IOL haptics make contact with eye tissue. It is an anatomical site (eg, the equator of the capsular bag) and is independent of the IOL model. The position of the IOL optic in relation to the LHP is determined from the exact design of the IOL. Gullstrand's eye model is adopted to obtain the posterior corneal radius, thickness of the cornea, and refractive indices of the eye media. Thick-lens ray tracing in the paraxial limit is used for the optical calculation. Results: A spreadsheet is given for the calculation. Conclusions: The methodology developed allows for IOL power calculation from first principles (ie, using true physical distances, radii, and refractive indices as input for the optical calculation).</EA>
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Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power

Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power

Source :

Descripteurs français

English descriptors

Abstract

Notice en format standard (ISO 2709)

Format Inist (serveur)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri