Artificial tear therapy for dry eye is usually delivered as drops or gels on the eye surface. The term “artificial tear injection” is sometimes used informally for punctal plug placement or intracanalicular inserts rather than true injections into the eye.
Punctal Plugs and Inserts
Punctal plugs are tiny devices placed into the tear drainage openings to slow tear outflow and keep more moisture on the eye. Some intracanalicular inserts slowly release lubricating or medicated agents into the tear film over time.
- Placement is done in the clinic under local anaesthetic drops
- Plugs may be temporary (dissolvable) or longer-lasting silicone types
- They are used when conventional drops do not provide adequate relief
- Occasional side effects include watering, irritation, or plug extrusion
Role in Dry Eye Management
These interventions are part of a stepwise dry eye treatment plan that also includes lubricants, lid hygiene, lifestyle measures, and sometimes prescription drops. True injections into the eye are not used for simple lubrication.
- Patients should understand that plugs supplement but do not replace surface care
- Regular review ensures plugs remain appropriately positioned and effective
- Infection or canaliculitis after plug placement is rare but treatable
- Severity and cause of dry eye guide whether punctal occlusion is recommended
