Method and apparatus for subjective refraction
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 24, 2012
Grant Date -
Aug 11, 2011
app pub date -
Feb 10, 2010
filing date -
Feb 10, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An article for performing a subjective refraction includes a lens having a mean power that varies across the lens in a first direction and a cylindrical power that varies across the lens in a second direction, orthogonal to the first direction, wherein the mean power varies by four diopters or more and the cylindrical power varies by four diopters or more.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully