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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Effect of silicone sound speed and intraocular lens thickness on pseudophakic axial length corrections.

We compared the sound speeds of SLM-1/UV (990 M/sec at 35 degrees Celsius [degrees C]), SLM-2/UV (1090 M/sec at 35 degrees C), and Perspex CQ poly(methyl methacrylate)(2658 M/sec at 35 degrees 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 degrees C) and intraocular temperature (35 degrees C).[1]

References

  1. Effect of silicone sound speed and intraocular lens thickness on pseudophakic axial length corrections. Yang, S., Lang, A., Makker, H., Zaleski, E. Journal of cataract and refractive surgery. (1995) [Pubmed]
 
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