INSTILLATION OF FLUORESCEIN To instill the fluorescein, have the patient look down, rest your wrist on the patient's forehead and grasp the upper lid with the index finger over the lashes. The patient should not be able to blink. With the patient still looking down, pull the lid up and gently lay the flat side of the strip against the conjunctiva. Do not rub the fluorescein strip across the eye. Gently lift it off and release the patient's lid. Do not use a dry fluorescein strip or dab the fluorescein strip against the lower lid as this unnecessarily irritates the patient and causes reflex tearing.