Single microstructure lens, systems and methods

Patent metadata

Field	Value
Publication number	US-9581834-B2
Application number	US-201514589197-A
Country	US
Kind code	B2
Filing date	Jan 5, 2015
Priority date	May 13, 2008
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

Systems and methods for providing enhanced image quality across a wide and extended range of foci encompass vision treatment techniques and ophthalmic lenses such as contact lenses and intraocular lenses (IOLs). Exemplary IOL optics can include a circular surface structure which acts as a diffractive or phase shifting profile. In some cases, a single ring IOL includes an anterior face and a posterior face, where a profile can be imposed on the anterior or posterior surface or face. The profile can have an inner portion such as a microstructure or central echelette, and an outer portion. Between the inner portion and the outer portion, there may be a transition zone that connects the inner and outer portions.

First claim

What is claimed is:

1. A method of designing an ophthalmic lens comprising only one isolated echelette, the method comprising utilizing pupil size measurements and based on the measurements determining the size of the one isolated echelette to impose on an anterior face or an opposing posterior face of the ophthalmic lens.

2. The method according to claim 1 , in which the measurements are based on the pupil sizes of a group of patients.

3. The method according to claim 1 , wherein the one isolated echelette comprises
a primary zone having a purely optical function; and
wherein the one isolated echelette is surrounded by a refractive peripheral zone.

4. The method according to claim 3 , wherein the ophthalmic lens further comprises a transition zone that connects the primary zone with the refractive peripheral zone, wherein the transition zone optionally provides optical characteristics.

5. The method according to claim 4 , wherein the primary zone is characterized by a first constant phase shift, and the echelette is characterized by a second constant phase shift that is equal to or different from the first constant phase shift.

Assignees

• Amo Groningen Bv

Inventors

• Weeber Hendrik A

Classifications

• A61F2230/0006

  circular · CPC title

• G02C7/041

  bifocal; multifocal · CPC title

• G02C7/044

  Annular configuration, e.g. pupil tuned · CPC title

• A61F2/16

  Intraocular lenses · CPC title

• A61B34/10

  Computer-aided planning, simulation or modelling of surgical operations · CPC title