Title:
A system and a method for the refraction amendment in a view inspection
Document Type and Number:
Japanese Patent JP6035255
Kind Code:
B2
Abstract:
Systems and methods for providing variable refractive correction in a visual field testing device are presented. One embodiment of the variable refractive correction involves two or more aligned transmissive plates arranged to produce changes in refractive power by translation or rotation of the plates relative to each other. Several alternative designs for providing variable refractive correction are described. The refractive correction can be set manually or automatically based on knowledge of the refractive error of a specific patient and spherical and cylindrical refractive correction are possible. Additional lens systems can be used to extend the range of refractive correction to accommodate a larger patient population.
Inventors:
Johansson, Yoran Andesh
Everett, Matthew Jay.
Baker, Christopher Jay Earl Buoy.
Everett, Matthew Jay.
Baker, Christopher Jay Earl Buoy.
Application Number:
JP2013558443A
Publication Date:
November 30, 2016
Filing Date:
March 15, 2012
Export Citation:
Assignee:
Carl Zeiss Meditech Actien Gezel Shaft
International Classes:
A61B3/024
Domestic Patent References:
| JP63015936A | ||||
| JP10216090A | ||||
| JP2006517135A | ||||
| JP2000083898A | ||||
| JP2006508730A |
Foreign References:
| CN201481388U | ||||
| US6045225 | ||||
| WO2001001848A1 | ||||
| WO2004049927A1 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Atsushi Honda
Hironobu Onda
Atsushi Honda