Fluorescein Test Strips, 300 UnitsProduct overview For staining the cornea Makes defects visible Contains fluorescein sodium Individually sterile packed strips 300 test strips Fluorescein Test Strips These paper fluorescein test strips are used when adjusting contact lenses, during applanation tonometry and when defects of the corneal epithelium are suspected. The coated strips are briefly inserted into the conjunctival sac and blinking will colour the whole anterior segment of the