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Fluorescein is used during an eye examination  to help in detecting an abrasive injury to eye,  to measure pressure inside eye (tonometry),  to help detect abnormalities in blood vessels in the eye (as observed in diabetes) and to fit hard contact lens inside the eye.

How it works

Fluorescein belongs to the class of drugs known as contrast media. It is a chemical dye that is used to help locate foreign bodies and identify damage to the surface of the eye.

Common side effects

Nausea, Allergic skin rash, Cough, Dizziness, Headache, Running nose, Sneezing, Vomiting


Expert advice

  • Inform your doctor about your allergic experiences, currents medical conditions such as diabetes, heart diseases and information of concomitant medications.
  • Seek immediate medical attention in case of any suspected allergic reaction such as redness and itching of eye, swelling around the eye, itchy skin rash or difficulty in breathing.
  • Do not drive or operate heavy machinery as fluorescein eye drops may cause temporary blurred vision.
  • Do not consume this drug if you are allergic to fluorescein or to any other such diagnostic dyes.
  • Do not consume this drug if you wear soft contact lenses, suffer from asthma or any such allergic disorder.
  • Tell your doctor if you are pregnant, planning to get pregnant or breastfeeding.

Content on this page was last updated on 30 September, 2016, by Dr. Varun Gupta (MD Pharmacology)