Effect of folding on the multifocal silicone intraocular lens: scanning electron microscopic study
| Autor: | Georg Häring, Stephan Behrendt, Martin Winter |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
genetic structures Scanning electron microscope medicine.medical_treatment Forceps Intraocular lens law.invention chemistry.chemical_compound Silicone Optics Lens Implantation Intraocular law Microscopy medicine Humans Lenses Intraocular business.industry Folding (DSP implementation) equipment and supplies Elasticity eye diseases Sensory Systems Ophthalmology chemistry Microscopy Electron Scanning Silicone Elastomers Multifocal IOLs Surgery Stress Mechanical sense organs Electron microscope business Biomedical engineering |
| Zdroj: | Journal of Cataract and Refractive Surgery. 25:1505-1509 |
| ISSN: | 0886-3350 |
| DOI: | 10.1016/s0886-3350(99)00240-0 |
| Popis: | Purpose To evaluate whether the surface of the refractive zonal multifocal silicone intraocular lens (IOL) is altered by different folding and implantation instruments and is more sensitive to manipulation during folding than the surface of a monofocal IOL. Setting Department of Ophthalmology, University Hospital, Kiel, Germany. Methods Evaluated were the refractive multifocal silicone IOL (SA-40N, Array) and an otherwise identical monofocal IOL (SI-40NB) from the same manufacturer (Allergan Inc.). Different folding devices (folding blocks, folding and implantation forceps, and an injector system) were used. The IOLs were kept folded for 60 seconds; 24 hours later, scanning electron microscopy (SEM) was performed. In addition, the cartridges of the injector system were examined by SEM. Results Overall, regardless of the folding and implantation instruments used, both the multifocal and monofocal IOLs had discrete surface alterations. The cartridges of the injector system had a rough surface at the tip, while the proximal portion appeared smooth. Conclusion There were no signs of lesions particularly affecting the surface of multifocal IOLs. |
| Databáze: | OpenAIRE |
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