How Does Lacrimal Groove Fill

There are two main methods to fill the lacrimal groove:

The first is a punctate injection through a sharp needle. The level of injection is mainly in the periosteal surface, that is, when using sharp needle injection, relatively safe level. Injection on the periosteal surface, less blood vessels, less chance of problems, but also a small amount of subcutaneous supplementation.

Second, use a long, about 5cm blunt needle for injection, blunt needle injection in the lacrimal groove, the layer is mainly in the subcutaneous and periosteum. The difference between a blunt injection on the periosteum and a sharp injection on the periosteum is that the level of the periosteum is relatively shallower with a blunt injection than with a sharp injection, meaning that the blunt injection does not go as deep, but the blunt injection is relatively better for evaluation. But a blunt needle is more painful to inject because it has to travel a longer route, and a blunt needle has to use a sharp needle to make an opening to get into the skin."

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