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Intraocular lens haptic fracturing with the neodymium:YAG laser : In vitro study

Identifieur interne : 006073 ( Main/Exploration ); précédent : 006072; suivant : 006074

Intraocular lens haptic fracturing with the neodymium:YAG laser : In vitro study

Auteurs : Nilufer Kocak [Turquie] ; Ali Osman Saatci [Turquie] ; Lider Celik [Turquie] ; Ismet Durak [Turquie] ; Suleyman Kaynak [Turquie]

Source :

Journal of cataract and refractive surgery [ 0886-3350 ] ; 2006.

RBID : Pascal:06-0294787

Descripteurs français

Pascal (Inist)
- Lentille intraoculaire, Néodyme, Laser YAG, In vitro, Chirurgie, Ophtalmologie, Traitement.
Wicri :
- topic : Chirurgie.

English descriptors

KwdEn :
- Acrylic Resins, Device Removal, In Vitro Techniques, In vitro, Intraocular lens, Laser Therapy, Lenses, Intraocular, Neodymium, Ophthalmology, Polymethyl Methacrylate, Polyvinyls, Surgery, Treatment, YAG laser.
MESH :
- chemical : Acrylic Resins, Polymethyl Methacrylate, Polyvinyls.
- Device Removal, In Vitro Techniques, Laser Therapy, Lenses, Intraocular.

Abstract

PURPOSE: To determine the neodymium:YAG (Nd:YAG) laser energy threshold to fracture the haptic of various currently marketed intraocular lenses. SETTING: Dokuz Eylul University, Ophthalmology Department, Izmir, Turkey. METHODS: Four haptic materials-poly(methyl methacrylate) (PMMA), hydrophobic acrylic, hydrophilic acrylic, and polyvinylidene fluoride-were tested. The intraocular lenses (lOLs) were grouped according to haptic material. Each group comprised 9 lOLs. Beginning laser energy was 4 mJ. If no crack was noted, energy was increased by 0.5 mJ at every 20 shots and the procedure continued until a fracture was noted. If the fracture could not be developed despite reaching an energy level of 10 mJ, the procedure was terminated. Statistical analysis was performed to determine the differences within groups. RESULTS: Hydrophobic acrylic and polyvinylidene fluoride haptics required higher energy and more laser shots to create a fracture than hydrophilic acrylic and PMMA haptics. CONCLUSIONS: Neodymium:YAG laser haptic fracturing can be a viable option to cut the fibrosed haptic before explanting any IOL. It was demonstrated in vitro that it is easier to fracture hydrophilic acrylic and PMMA haptics than hydrophobic acrylic and polyvinylidene fluoride haptics.

Affiliations:

Turquie

Le document en format XML

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<term>In vitro</term>
<term>Intraocular lens</term>
<term>Laser Therapy</term>
<term>Lenses, Intraocular</term>
<term>Neodymium</term>
<term>Ophthalmology</term>
<term>Polymethyl Methacrylate</term>
<term>Polyvinyls</term>
<term>Surgery</term>
<term>Treatment</term>
<term>YAG laser</term>
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<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Acrylic Resins</term>
<term>Polymethyl Methacrylate</term>
<term>Polyvinyls</term>
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<keywords scheme="MESH" xml:lang="en"><term>Device Removal</term>
<term>In Vitro Techniques</term>
<term>Laser Therapy</term>
<term>Lenses, Intraocular</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Lentille intraoculaire</term>
<term>Néodyme</term>
<term>Laser YAG</term>
<term>In vitro</term>
<term>Chirurgie</term>
<term>Ophtalmologie</term>
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<front><div type="abstract" xml:lang="en">PURPOSE: To determine the neodymium:YAG (Nd:YAG) laser energy threshold to fracture the haptic of various currently marketed intraocular lenses. SETTING: Dokuz Eylul University, Ophthalmology Department, Izmir, Turkey. METHODS: Four haptic materials-poly(methyl methacrylate) (PMMA), hydrophobic acrylic, hydrophilic acrylic, and polyvinylidene fluoride-were tested. The intraocular lenses (lOLs) were grouped according to haptic material. Each group comprised 9 lOLs. Beginning laser energy was 4 mJ. If no crack was noted, energy was increased by 0.5 mJ at every 20 shots and the procedure continued until a fracture was noted. If the fracture could not be developed despite reaching an energy level of 10 mJ, the procedure was terminated. Statistical analysis was performed to determine the differences within groups. RESULTS: Hydrophobic acrylic and polyvinylidene fluoride haptics required higher energy and more laser shots to create a fracture than hydrophilic acrylic and PMMA haptics. CONCLUSIONS: Neodymium:YAG laser haptic fracturing can be a viable option to cut the fibrosed haptic before explanting any IOL. It was demonstrated in vitro that it is easier to fracture hydrophilic acrylic and PMMA haptics than hydrophobic acrylic and polyvinylidene fluoride haptics.</div>
</front>
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Serveur d'exploration sur les dispositifs haptiques

Intraocular lens haptic fracturing with the neodymium:YAG laser : In vitro study

Intraocular lens haptic fracturing with the neodymium:YAG laser : In vitro study

Source :

Descripteurs français

English descriptors

Abstract

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Pour mettre un lien sur cette page dans le réseau Wicri

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