Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Support
Reexamination Certificate
2008-03-11
2008-03-11
Harrington, Alicia M (Department: 2873)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Support
C351S246000
Reexamination Certificate
active
10771745
ABSTRACT:
A method for evaluating and measuring accommodation amplitude in one or both eyes of a person by subjecting the person to a near-vision visual acuity test comprising a target having optotypes displayed thereon, different targets having different sized optotypes, determining the nearest point at which the person accurately identifies a majority of the optotypes on the target, and introducing either a sufficiently powered plus lens or sufficiently powered minus lens to locate the nearest point within an identified range of distances from the eye. An apparatus is also disclosed for employing the versions of the method, comprising a holder connected to a slide rule, a track for movably positioning the holder, and a lens positioner for introducing plus or minus lenses as needed. A reference point marker may be positioned along the track for identifying the range of distances at which the nearest point is desired to be located.
REFERENCES:
patent: 2523007 (1950-09-01), Glazer
Harrington Alicia M
Kadambi Brothers, LLC
Kreig DeVault LLP
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