Method of predicting visual acuity with change of spherocylindri

Details Method of predicting visual acuity with change of spherocylindri Method of predicting visual acuity with change of spherocylindri

1996-04-15

1998-01-20

Jaworski, Francis

Surgery

Truss

Pad

351246, A61B 1300

Patent

active

057092184

ABSTRACT:
The present invention is directed to a method for predicting visual acuity to the subject due to change in spherocylindrical refractive error of the subject's eye utilizing measurements of uncorrected visual acuity, corrected visual acuity and spherical cylindrical refractive error. A defocus equivalent is calculated and predictions of uncorrected visual acuity is made through the use of a defocused acuity graph.

REFERENCES:
patent: 5512965 (1996-04-01), Snook
"The Influence of Astigmatism on the Response Functio of an Optical Sysetm" Proc. Roy Soc. Lon. Jan. 1956 pp. 91-104.
"The Relationship of Visual Acuity, Refractive Error, and Pupil Size, After Kerasotomy" Arch Opth vol. 109 Jan. 1991 pp. 70-76.

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