Punctal occlusion is a procedure that helps retain tears on the ocular surface regardless of the causative factor of the tear films depletion. It is designed to provide a simple, short or long-term and reversible means of reducing or eliminating tear drainage via the punctum.
- Blocks or slows the outflow of tears through the nasolacrimal drainage channels ?
- Provides a more consistent supply of tears on the corneal surface ?
- Tears are retained; therefore, their volume is increased.
Punctal occlusion benefits for treating dry eye include;
- relieving symptoms
- improving TBUT
- reduced corneal staining
- increased lower tear meniscus height
- improved visual acuity
- improved conjunctival goblet cell density
- enables patients to reduce their use of lubricants
Most types of plug available today have a very high safety profile, with epiphora, conjunctival irritation and extrusion being the only known complications.