Real dynamic assessment of tear film optical quality for monitoring and early prevention of dry eye

To evaluate real dynamic assessment of tear film optical quality for monitoring and prevention of dry eye. Right eyes of 62 normal and 39 dry eye subjects were included. Dynamic measurement of objective scatter index (OSI) was performed by using the Optical Quality Analysis System II (OQAS II), correlation coefficient between OSI and time (CCOT) was calculated. According to whether the CCOT was significantly ascending, normal and dry eye groups were further subdivided for comparison. By using Scheimpflug-Placido topographer, non-invasive tear break-up time (NITBUT) was recorded, and a 2-dimensional precorneal tear film map was reconstructed and divided into central, middle, and peripheral corneal zones, distribution of tear break-up spots in the 3 corneal zones were analyzed. The numbers of tear break-up spots were higher in all the 3 corneal zones of the dry eye subjects (P 
Source: Medicine - Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research