Application of the quick contrast sensitivity function in visual function assessment

The contrast sensitivity function (CSF) describes visual sensitivity at different contrasts and spatial scales, which provides a fundamental caracterization of spatial vision, important for basic and clinical applications, but its long testing time has prevented the easy and widespread assessment.The quick contrast sensitivity function (qCSF) method is a novel Bayesian adaptive procedure for rapid measurement of the CSF, which can greatly improve the efficiency of CSF assessment.In the normal eyes, amblyopia, myopia and a low vision population, the high sensitivity, high precision and high test-retest reliability of the qCSF method have been verified.The qCSF method also shows higher CSF efficiency and lower costs in a large sample.Currently, the qCSF method has been implemented on iPad, and medical devices using this program have also been applied in some clinical institutions in the United States and Germany, which has a good prospect in clinical application.In this review, the application of the qCSF in visual function assessment was reviewed.

Visual acuity; Contrast sensitivity function; Bayesian adaptive inference; Quick contrast sensitivity function; Amblyopia