The average index of fluorescein dye disappearance test in the young people

ABSTRACT

A study was carried out on 55 eyes of 29 volunteers aged from 21 to 47 years old in order to find out the average values of the fluorescein dye disappearance test (FDD test) in the young people - a group at high risk of canalicular lacerations. The results showed that, with 0.5% solution of fluorescein commonly used in daily practice, the average height of lacrimal streams dyed with fluorescein is 0.18 mm with standard deviation of 0.09 mm. This is the first work to define quantitatively the values of the FDD test on normal eyes. The results of the research could be basic data to evaluate outcomes of reconstructive canalicular surgery.