06923539 is referenced by 43 patents and cites 15 patents.

The present invention provides monofocal ophthalmic lenses that exhibit extended depth of field while providing sufficient contrast for resolution of an image over a selected range of defocus distances. In some embodiments, a lens of the invention can include a refractive surface having controlled surface modulations relative to a base profile. The surface modulations are designed to extend a depth of field of the lens such that a single image can be resolved, albeit with somewhat less contrast, over a range of distances greater than the focal region of a conventional lens. The ophthalmic lenses of the invention can be employed in various vision correction applications, including, but not limited to, intraocular lenses, contact lenses, instrastromal implants and other refractive devices.

Title
Aspheric lenses
Application Number
10/437687
Publication Number
6923539 (B2)
Application Date
May 12, 2003
Publication Date
August 2, 2005
Inventor
Daniel R Carson
Fort Worth
TX, US
Michael J Simpson
Arlington
TX, US
Agent
Jeffrey S Schira
Assignee
Alcon
CH
IPC
G02C 007/04
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