The unnamed woman had been applying makeup in the back of the taxi when it collided with a pickup truck near the Din Daeng intersection at 5.20pm on Tuesday evening.
When rescue workers arrived at the scene they found almost the whole of the pencil lodged in her eye.
The woman, who was still conscious, had blood coming from her nose. She had been travelling from Mo Chit bus terminal to Pratunam when the accident occurred.
The media reported that doctors managed to safely remove the pencil and described the woman’s condition as stable.
Sheq was expected to make a full recovery with no lasting damage to her eye, doctors said.