System and method for measuring fixation disparity and...

Details System and method for measuring fixation disparity and... System and method for measuring fixation disparity and...

2009-01-21

2010-11-09

Dinh, Jack (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Methods of use

C351S239000, C351S170000

Reexamination Certificate

active

07828439

ABSTRACT:
In accordance with the invention there is disclosed a method for determining the amount of prism needed to be placed in spectacle lenses to correct ones fixation disparity and or proprioceptive misalignment, wherein target objects viewed by each eye will be perceived to be at optical infinity and the objects to be viewed by each eye are seen separately but also simultaneously, the method comprising: adding Base Out prism in a smooth and continuous manner until the target objects jump together, switch sides or are suppressed; decreasing Base Out prism and thereafter continuing to add Base In prism until the target objects return to their original position; and recording amount of prism needed to achieve the target objects returning to their original position.

REFERENCES:
patent: 7104647 (2006-09-01), Krall

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