In this study, we assessed the sensitivity of the Vistech and FACT CS charts to changes after refractive surgery (experiment 1), assessed the sensitivity of the FACT CS chart in cataract …

2023年6月11日 · Contrast sensitivity (CS) is the ability to perceive sharp and clear outlines of very small objects. It is also defined as the ability to identify minute differences in the shadings and …

The Vistech and FACT CS charts are ill suited for refractive or cataract surgery outcomes research. Aim: To investigate the repeatability and sensitivity of two commonly used sine wave …

fractive surgery changes have not previously been reported, and the chart has not been compared to its predecessor, the Vistech chart. In this study, we assessed the sensitivity of …

By assessing an observer’s ability to discriminate luminance contrast differences in sinusoidal gratings of varied spatial frequency (i.e., grating fineness), the contrast sensitivity function...

The aim of the study was to measure the reliability of the Vistech VCTS 6500 charts, in test score units, in order to allow clinicians to derive estimates of what constitutes a clinically meaningful …

The purpose was to define a normative database for a grating test for contrast sensitivity, based on a chart monitor with high-definition liquid crystal display, and validate its measurements by …

2004年1月1日 · Aim: To investigate the repeatability and sensitivity of two commonly used sine wave patch charts for contrast sensitivity (CS) measurement in cataract and refractive surgery …

Methods: The Vistech CS chart and its descendant, the Functional Acuity Contrast Test (FACT), were administered in three experiments: (1) Post-LASIK and age matched normal subjects; (2) …

2004年2月1日 · The Vistech CS chart and its descendant, the Functional Acuity Contrast Test (FACT), were administered in three experiments: (1) Post-LASIK and age matched normal …