This excerpt taken from the EYE 8-K filed Jul 13, 2005.
Note 4. Patent and Technology Assets
In April 2003, we acquired technology, including patents and other assets associated with our WaveScan WaveFront System (WaveScan System) from 20/10 Perfect Vision Optische Gerate GmbH. We paid $5.9 million for this technology, which was previously licensed to us under an exclusive licensing agreement that is superseded by the acquisition. These assets are included in other assets and are being amortized to cost of system revenues to reflect either actual usage or a straight line charge based on their estimated useful life of five years, whichever is greater. Amortization expense for these assets for the three years ended December 31, 2004, 2003 and 2002 was $1.0 million, $1.9 million, and $0, respectively. Amortization of these assets on a straight line basis would be $1.2 million, $1.2 million, $0.6 million, $0 and $0 for each of the years ending December 31, 2005, 2006, 2007, 2008 and 2009, respectively.