advocates eye testing based on an understanding of vision science and
modeling. Understanding the visual model of how we see provides the
basis for making decisions about testing, including what tests to perform
and how to perform them.
Many standard vision
testing tools being used today, such as the familiar 20/20 letter chart,
only test a limited range of our visual capabilities. Years of scientific
research and clinical testing, however, have proven that 20/20 visual
acuity testing alone is not enough. The full range of our visual function
must be examined and tested in order to provide a comprehensive assessment
of our visual health.
This section examines
the different types of acuity, contrast and functional vision tests
available today, and analyzes the pros and cons of the various testing
Functional Vision Test Battery
of Contrast Sensitivity Testing