Fluorescence is a dye a weak dibasic acid it has lot of uses in ophthalmology long back we had liquid fluorescence but it was important for it to be autoclaved as infected fluorescence would promote the growth of Pseudomonas once it was put in cornea  however with recent advances we have disposable fluorescence strips which are sterilised for single use and thus are very safe the uses are  It is used to detect corneal erosions and cor ulcers Detection of corneal f bodies Corneal surgery Contact lens fitting Leaking wound in cataract surgery in past when we would give corneal section with VG cataract knife Assessment of lacrimal passages  Applanation tonometry FF angiography  Tear film break up time Share your views.