When is a sub-Tenon’s injection used?
The method may be used as part of the treatment of certain eye conditions, where the doctor considers local delivery of the medication appropriate.
The indications depend on the diagnosis, the condition of the structures of the eye, any other illnesses and the medication to be used.
How does it differ from ordinary eye drops?
Eye drops are applied to the surface of the eye. With a sub-Tenon’s injection the medication is delivered into the tissues around the eyeball, which gives a different pattern of penetration and local action.
The two are not interchangeable — the route of delivery is chosen by the doctor.
How is the procedure performed?
Before the procedure the ophthalmologist examines the patient and confirms the indications and any contraindications.
It is carried out under local anaesthesia and under aseptic conditions.
After the medication has been delivered the doctor assesses the eye and gives recommendations for the period that follows.
What should you tell the doctor?
Before the procedure you should report:
- allergic reactions
- chronic illnesses
- previous eye surgery
- medication you take regularly
- any recent changes in your health
After the procedure
Follow the ophthalmologist’s recommendations and do not use additional eye medication without agreeing it with your doctor.
If severe pain, marked swelling, significant redness, a sudden drop in vision or other unusual symptoms occur, seek medical help.
Need a consultation with an ophthalmologist?
Book an appointment at Helios. The doctor will examine you, order further diagnostics if needed and determine the best treatment approach.
The information on this page is for general guidance and does not replace a consultation with a doctor. Indications, contraindications and the method of treatment are determined individually after a medical examination.
