| Autor: |
Yang, Stan, Lang, Alan, Makker, Harish, Zaleski, Edward |
| Zdroj: |
Journal of Cataract & Refractive Surgery; July 1995, Vol. 21 Issue: 4 p442-446, 5p |
| Abstrakt: |
We compared the sound speeds of SLM-1/UV (990 M/sec at 35 degrees Celsius [°C]), SLM-2/UV (1090 M/sec at 35°C), and Perspex CQ® poly(methyl methacrylate) (2658 M/sec at 35°C). Methods are presented to determine the correction of axial length (CAL) factors for axial length measurements made on pseudophakes with AMO® PhacoFlex® SI-18, SI-26 (SLM-1/UV), and AMO® PhacoFlex® II SI-20 or SI-30 (SLM-2/UV) silicone intraocular lenses (IOLs). A CAL is required to avoid potential errors with secondary IOL power predictions; CALs, which are strongly dependent on the material sound speed and less so on lens thickness, ranged from −0.65 mm to −1.20 mm for SLM-1/UV silicone IOLs and from −0.35 mm to −0.55 mm for SLM-2/UV silicone IOLs. The sound speeds of IOL materials varied insignificantly between ambient room temperature (23°C) and intraocular temperature (35°C). |
| Databáze: |
Supplemental Index |
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