RM-800 Contrast Sensitivity function tester,the third generation product of contrast sensitivity series in Wenzhou Raymond Photoelectricity Tech.Co.Ltd,has a series of authentic data,which is widely used in clinical medicine and scientific research.As a detecting vetor,RM800's data is not only published in domestic journal articles,but also published in international core journal paper of SCI series.Besides,most of RM800 users may be around you now.