GEORGE LINK SPAETH
Medical Practice in Philadelphia, PA
License number
Pennsylvania MD006058E
Category
Medicine
Type
Medical Physician and Surgeon
Address
Address
Philadelphia, PA 19107
Personal information
See more information about GEORGE LINK SPAETH at radaris.comName
Address
Phone
1749 Reading Blvd, Reading, PA 19610
1515 The Fairway APT 443, Jenkintown, PA 19046
15 Laughlin Ln, Philadelphia, PA 19118
8138 Shawnee St, Philadelphia, PA 19118
1749 Reading Blvd, Reading, PA 19610
Professional information
See more information about GEORGE LINK SPAETH at trustoria.com
George Spaeth, Philadelphia PA
George Spaeth, Philadelphia PA
Work:
Wills Eye Institute
840 Walnut St, Philadelphia, PA 19107 Wills Eye Hospital
840 Walnut St, Philadelphia, PA 19107 Edward Katz
900 Walnut St, Philadelphia, PA 19107
840 Walnut St, Philadelphia, PA 19107 Wills Eye Hospital
840 Walnut St, Philadelphia, PA 19107 Edward Katz
900 Walnut St, Philadelphia, PA 19107
Contrast Sensitivity Test
Contrast Sensitivity Test
US Patent:
8042946, Oct 25, 2011
Filed:
Apr 16, 2010
Appl. No.:
12/799028
Inventors:
George L. Spaeth - Philadelphia PA, US
Jesse Richman - Providence RI, US
Jesse Richman - Providence RI, US
International Classification:
A61B 3/02
US Classification:
351239
Abstract:
Methods and apparatus are provided for measuring contrast sensitivity. In one method, a person is presented with a test pattern having several test areas. In a first test cycle, one of the test areas contrasts with (for example, is darker than) the other test areas. The person being tested indicates which test area the person perceives as contrasting with (darker than) the other test areas. This is repeated a number of times for the other test areas, with the level of contrast staying the same but with a different test area becoming the contrasting (darker) test area. In subsequent cycles, these steps are repeated, with decreasing levels of contrast. The contrasting test area may, for example, appear as a solid, as a pattern such as two contrasting vertical bars, or as an animation such as a sinusoidal frequency grating.